Chambers of Xeric

"Chambers" redirects here. For other uses, see Chamber (disambiguation).

This is a safe activity in an instanced area.

If you die here, you will not lose any of your items, including those stored inside an Item Retrieval Service (deathbank).
However, any items you drop manually on the ground will be lost.
Warning: It is still dangerous for Hardcore group iron players.

This article has a strategy guide.

All information on mechanics and strategy will be on this page.

Chambers of Xeric
Released								5 January 2017 (Update)
Also called								Raids 1, CoX, Chambers
Type								Raid
Members								Yes
Location								Mount Quidamortem
League region								Kourend✓
Participants								1-100
Skills								Combat, Mining, Woodcutting, Herblore, Farming, Hunter, Cooking, Fishing, Thieving, Firemaking, Agility
Reward currency								N/A
Tutorial								No
Music								Lower Depths, Upper Depths, Fire in the Deep
Map

The Chambers of Xeric is a raid located within a sprawling cave system beneath Mount Quidamortem in the Kebos Lowlands. It was the first raid introduced to Old School RuneScape.

Long ago, Xeric and some of his followers travelled to the mountain after his exile from the kingdom of Great Kourend. The Chambers themselves and the now-ruined temple that sits above them were built by Xeric's personal artisan, Tekton. The experiments conducted within the Chambers resulted in, among many other things, the creation of the Muttadile, an attempted coup by Xeric's High Priest (which resulted in Xeric ordering the destruction of the temple), and accidentally letting in a powerful Abyssal creature.

Even after Xeric took the power he sought within the Chambers, the caves still house the results of his many experiments, as well as the Guardian in the Deep Xeric himself fought against — and defeated.

Ironmen are eligible for rewards from the raid when completing it alongside other players. Group ironman players will lose their prestige upon entering the raid with a player outside of their group.

Location

Getting to Mount Quidamortem from the Shayziens' Wall.

The Chambers of Xeric are located on Mount Quidamortem, which can be quickly accessed via the Lovakengj Minecart Network. This costs 20 coins per ride unless the player has completed The Forsaken Tower, in which case it is free.

Otherwise, players will need to head to the Shayziens' Wall and make their way west to Mount Quidamortem; be wary of aggressive lizardmen and lizardmen brutes. For those arriving there without the mine cart system, speak to the Mountain Guide (who is located on the mountain next to Gnosi, Historian Duffy, and the Natural Historian) before leaving; doing so will establish a two-way transportation system between the mountain and the Shayziens' Wall which can be accessed by using the Book of the dead and use the History and hearsay option, then run south-west.

Once players receive an ancient tablet as a reward from the Chambers of Xeric, they are able to use it on Xeric's talisman to instantly teleport to the mountain.

The fairy ring BLS will bring the player near Mount Quidamortem. Run North to reach the entrance.

Mechanics

Main article: Chambers of Xeric/Strategies

The Chambers of Xeric uses a unique party finding system to help determine how strong the team is. The raid can be started with just one player or up to 100 at a time. Players in smaller groups can also scale the raid without having to rely on others to fill in the actual slots. The stats of the enemies in the raid will likewise scale accordingly to the team size, while the skill requirements are based on the team's overall skilling levels. Players can also toggle "large raids" if they choose to.

To start a raid, the leader must create a team. This "team" is the leader's chat-channel, which other players may join by manually typing in the channel's name. Additionally, the leader must register on the recruitment board. Once everyone is ready, the leader should enter the chambers, where a starting room is located. The raid officially starts once the leader starts the raid; when that happens, all the mechanics will be calculated and no one may join the instance if they were not in by the time the raid started. If the leader leaves by any means, the next leader will be whoever has the highest rank in the Clan Chat, with a minimum rank of recruit; if no suitable rank is found, everyone is thrown out of the instance.

The entrance room contains a bank chest to allow players to adjust their inventories accordingly to whatever rooms are generated in the raid. Players will not be able to drop items before the raid starts, and the bank chest will be closed shut once the raid begins.

There are three floors in each raid: two floors of pre-combat/skilling rooms, and the third floor houses the final boss and is always static in every layout. Energy pools are found in scavenger rooms, resource rooms and the final room in the first two floors, which fully replenish run energy when interacted with.

In normal raids, a floor will consist of both a starting and exit room, one resource room, one or two scavenger rooms, and two or three combat and/or skilling rooms. In the event that two scavenger rooms are in a single floor, one of these will always use the large layout with a skilling obstacle inside it. These floors will either consist of seven or eight rooms.

If large raids are toggled, the floors will be entirely filled with eight rooms, and each floor will consist of both a starting and exit room, one resource room, one scavenger room, and four combat and/or skilling rooms. Duplicate skilling rooms are enabled in large raids, meaning that it is possible to get two tightrope rooms in the same raid.

Challenge Mode

Main article: Chambers of Xeric/Challenge Mode

Challenge Mode is a "hard" version of the existing Chambers of Xeric, which can be toggled on. All combat and puzzle rooms are featured in challenge mode, and all enemies' stats and health (barring the Great Olm, who only has increased stats) are increased. Unlike normal mode, the layout is always static, and with all puzzle and combat rooms being featured, players must clear through four floors of enemies rather than three.

Completion of the mode in a specific time frame can yield metamorphic dust to reskin an olmlet, and twisted ancestral colour kit to recolour ancestral robes. Cosmetic capes are awarded at specific clear milestones.

Resources

The Chambers of Xeric have various resources which can be used in the raid to make things easier.

Scavenger beasts can be found around the dungeon. One scavenger room is always guaranteed somewhere in the raid, and it will always be before the first puzzle room. It is common to encounter one scavenger room on each floor, though in uncommon circumstances players may encounter two scavenger rooms on the floor. They are primarily killed for tool and Herblore secondary drops, which are used in the resource rooms, such as butterfly nets and cave worms.

The scavengers encountered are random, in addition to the room type they appear in - some rooms may be a small bend or curve, others a spacious area (which will always contain a boulder, mining rock or sapling shortcut which can be cleared away for points). The amount of scavengers in the room, along with their strength (to a very mild degree) is determined by the amount of players in the raid.

If the player dies in the Chambers, they will drop all raid-only items upon death; for example, if the player died with 10 Xeric's aid (+), those potions are dropped immediately upon dying. Other items that can be found, such as a hammer, will not be dropped upon death.

Food

All these cooking resources require the same level for hunting or fishing them, with the tier being determined by the team's overall Hunter/Fishing level. They are not often utilised in normal raids as Xeric's aid heals more per inventory space.

To catch bats, a butterfly net is required.

To catch fish, a fishing rod is required, with cave worms as bait. In fishing rooms, there are three fishing spots. One of these three spots contains a cave snake, which will damage the player (or take their fish). If a snake appears in the fishing spot, stop fishing and click elsewhere to avoid taking damage. Only spots containing plain fish and cave snakes will move occasionally.

All the items required to capture bats and fish can be dropped by scavengers.

Fishing

Food		Levels	XP	Heals
	Pysk fish (0)	1 1	20 10	5
	Suphi fish (1)	15 15	23 13	8
	Leckish fish (2)	30 30	26 16	11
	Brawk fish (3)	45 45	29 19	14
	Mycil fish (4)	60 60	32 22	17
	Roqed fish (5)	75 75	35 25	20
	Kyren fish (6)	90 90	38 28	23

Hunter

In resource rooms without fishing spots, there will be two to three bats flying around in the chamber, which can be caught and cooked for food. Players with 99 Hunter can catch any bats barehanded.

Food		Levels	XP	Heals
	Guanic bat (0)	1 1	5 10	5
	Prael bat (1)	15 15	9 13	8
	Giral bat (2)	30 30	13 16	11
	Phluxia bat (3)	45 45	17 19	14
	Kryket bat (4)	60 60	21 22	17
	Murng bat (5)	75 75	25 25	20
	Psykk bat (6)	90 90	29 28	23

Farming

Seeds can be obtained from several bosses, such as the Skeletal mystics, Lizardmen shamans, and Guardian statues. They can also be found by raking weeds in the top and lower floors (the last area in those floors and the first area in the lower floor).

There are two farming plots in each resource room for players to grow herbs. Due to the magic of the chambers, herbs grow faster and are fully grown in 30 seconds.

Seed		Level	Planting XP	Harvest XP
	Golpar seed	27	4	10
	Buchu seed	39	6	15
	Noxifer seed	55	12	30

Herblore

Potions can be dropped in small amounts by the bosses. Some bosses drop herblore secondaries, although they are primarily obtained from scavengers.

There are three types of potions a player can make:

• Golpar (combat potions)
• Buchu (recovery potions)
• Noxifer (overload-type potions)

To create potions in the chambers, a gourd must be collected from the nearby gourd tree, then filled with water from the nearby water spout or with Humidify. Gourds can be picked en masse with the "Pick-lots" option. Gourds automatically break upon drinking the last dose of the potion.

Note: Potion tiers are capped on the player's Herblore level upon creation and will downgrade accordingly for overloads; e.g a player with 80 Herblore would be able to make combat+ potions, but as overload+ requires 90 Herblore, they will downgrade into a normal overload upon creation.

Weak potions

Potion		Level	Herb	Second ingredient	XP	Effect
	Elder (-)	47	Golpar	Stinkhorn mushroom	6.5	Increases Attack, Strength, and Defence levels.
	Twisted (-)	47	Golpar	Cicely	6.5	Increases your Ranged level.
	Kodai (-)	47	Golpar	Endarkened juice	6.5	Increases your Magic level.
	Revitalisation (-)	52	Buchu leaf	Stinkhorn mushroom	13.5	Restores your stats and Prayer.
	Prayer enhance (-)	52	Buchu leaf	Cicely	13.5	Regenerates prayer points over time.
	Xeric's aid (-)	52	Buchu leaf	Endarkened juice	13.5	Works as Saradomin brew.
	Antipoison (-)	60	Noxifer	Cicely	13.5	Cures poison and provides immunity to it for 90 seconds.
	Overload (-)	60	Noxifer	Elder (-) Twisted (-) Kodai (-)	33.5	Boosts all the player's combat stats by 4 + 10%, while damaging them for 50 hitpoints. This boost is reapplied every 15 seconds for 5 minutes until the effects wear off, and the player is then healed 50 hitpoints.

Standard potions

Standard potions have the effects of their super variants outside (e.g. the Overload is exactly the same as the one in Nightmare Zone).

Potion		Level	Herb	Second ingredient	XP	Effect
	Elder potion	59	Golpar	Stinkhorn mushroom	10	Increases Attack, Strength, and Defence levels.
	Twisted potion	59	Golpar	Cicely	10	Increases your Ranged level.
	Kodai potion	59	Golpar	Endarkened juice	10	Increases your Magic level.
	Revitalisation potion	65	Buchu leaf	Stinkhorn mushroom	20	Restores your stats and Prayer.
	Prayer enhance	65	Buchu leaf	Cicely	20	Regenerates prayer points over time.
	Xeric's aid	65	Buchu leaf	Endarkened juice	20	Works as Saradomin brew.
	Antipoison potion	75	Noxifer	Cicely	20	Cures poison and provides immunity to it for six minutes.
	Overload	75	Noxifer	Elder potion Twisted potion Kodai potion	50	Boosts all the player's combat stats by 5 + 13%, while damaging them for 50 hitpoints. This boost is reapplied every 15 seconds for 5 minutes until the effects wear off, and the player is then healed 50 hitpoints.

Strong potions

Potion		Level	Herb	Second ingredient	XP	Effect
	Elder (+)	70	Golpar	Stinkhorn mushroom	13	Increases Attack, Strength, and Defence levels.
	Twisted (+)	70	Golpar	Cicely	13	Increases your Ranged level.
	Kodai (+)	70	Golpar	Endarkened juice	13	Increases your Magic level.
	Revitalisation (+)	78	Buchu leaf	Stinkhorn mushroom	26.5	Restores your stats and Prayer.
	Prayer enhance (+)	78	Buchu leaf	Cicely	26.5	Regenerates prayer points over time.
	Xeric's aid (+)	78	Buchu leaf	Endarkened juice	26.5	Works as Saradomin brew.
	Antipoison (+)	90	Noxifer	Cicely	26.5	Cures poison and provides immunity to it for nine minutes.
	Overload (+)	90	Noxifer	Elder (+) Twisted (+) Kodai (+)	66.5	Boosts all the player's combat stats by 6 + 16%, while damaging them for 50 hitpoints. This boost is reapplied every 15 seconds for 5 minutes until the effects wear off, and the player is then healed 50 hitpoints.

Storage units

Storage units are built from mallignum root planks, obtained as drops from scavengers. A hammer is required in building storage units, with the dragon warhammer or elder maul being a suitable substitute.

Once a storage unit is built, anyone can use it. Storage units have a shared and personal inventory. The shared inventory allows players to store items used in the raid, such as the tools, seeds, herbs, Herblore secondaries, and potions. The personal inventory is much like the shared inventory, but it can also hold the player's belongings, such as weapons and armour. The player can also put in raid-unique items in there if desired. In addition to this, once a storage unit is built anywhere in the Chambers, they will appear in all potential hotspots where they may be found.

Storage units can be found at the end of each floor, in addition to appearing in resource rooms, the corrupted scavenger, ice demon chambers, and outside of the Great Olm chamber.

While higher levelled storage units can be built immediately, they still require the materials to build the previous tiers. So in order to build a large storage unit instantly, you need 6 planks (4 for the first two storage units, then 2 for the remaining upgrade).

Players who leave the Chambers with their personal items still stored in the storage units can retrieve them from the private storage unit next to the bank chest on the mountain. The private storage unit must be emptied before players can re-enter the Chambers of Xeric. Should a player die outside of the Chambers of Xeric before claiming any items left in the chest, the items will not be destroyed. If the player is an Ultimate Iron Man, however, the items will instead be dropped outside of the entrance upon death.

Storage units		level	Planks required	Experience	Capacity	Capacity (personal)
	Small storage unit	30	2	150	250	30
	Medium storage unit	60	4	150	500	60
	Large storage unit	90	6	150	1,000	90
	Massive storage unit	99	8	150	1,500	120

Bosses

A group of players fighting the Great Olm.

Bosses drop various items on defeat, apart from Great Olm. These drops are awarded to the player who dealt the most damage to them in the encounter. If this player should be an Ironman player, then the items can be picked up by all players.

• Ice Demon
• Lizardman Shamans
• Muttadiles
• Skeletal Mystics
• Tekton
• Vanguards
• Vasa Nistirio
• Vespula
• Great Olm (final boss)

Reward system

Player rewards are based on "participation" points. As the team collects more points, they have an increased chance of obtaining unique items. Individually, these points determine the quantity of common rewards. If a player dies in a raid, they will lose 40% of the points that they had before their death. If the player dies with none, or extremely few, personal points (less than 5% of the total points before death), the team's overall points are reduced instead by 5%.

Common loot awarded at the end of the raid scales up to 131,071 points. Additional points earned by a player after this point are still included when rolling for uniques.

If a member of a raid party leaves early, the points multiplier and difficulty for that raid will remain the same. To prevent megascale boosting abuse at Chambers of Xeric, players who leave a raid in progress are eligible to receive unique items, but if they would do so, the reward is discarded instead. This ensures that leaving a CoX raid no longer transfers loot chances onto remaining participants

Gaining Points

Gaining points in raids is possible in multiple ways, all of which have a cap which scales to the number of players in the raid. Below is a short description for all ways to gain points within the Chambers of Xeric.

Combat

Dealing damage within the Chambers of Xeric will reward the player with points based on damage dealt.

Storage unit

Building or upgrading the storage unit will give 100 points per tier.

Shortcuts

In some scavenger rooms, a shortcut which requires Mining, Woodcutting, or Strength to clear can be found. Clearing this shortcut rewards the player with points equal to the level requirement times 5. For example, for a shortcut that requires 86 mining, clearing the shortcut will result in 430 points.

Muttadile

In the Muttadile room, there is a meat tree. Cutting this tree awards some points.

Guardians

When a player steps between the Guardians, they will push the player away, dealing damage and awarding some points. The point cap for this is currently believed to scale non-linearly with the number of players in the raid but the exact formula is not currently known.

Cooking Food

A player is able to catch bats using Hunter and catch fish using Fishing within the Chambers of Xeric. When any player (including the person who cooked the food) eats them and heals damage, the player that cooked the food is awarded 4 + (8 * bat tier) points. If a different player to the one cooking the food uses that food to heal, the player that cooked the food receives 50% more points than if they were to eat it themselves. Psykk bats found in the Thieving room count as food cooked by the player who found them. There is a cap on points gained from food equal to 20 times the number of people participating in the raid.

Potions

Appropriate use of potions that the player makes will award some points to the player that made them or got them from one of the bosses. The points awarded are capped at 5 sips times the number of people participating in the raid, plus five extra at a reduced amount. More points are given if a player other than the one who created the potion drinks them. Overloads award the highest amount of points, so players should try to refrain from drinking other potions during the raid, as the point cap for potions is based on doses drunk, not points gained. 75 Herblore for overload, 90 Herblore for overload+.

Crabs

In the Jewelled Crab room, attacking or being targeted by one of the crabs (including ones not used to bounce the floating crystal) will reward some points upon each successful crystal colour change.

Ice Demon

When a player deposits kindling in the braziers in the Ice demon room, they are rewarded with points.

Thieving

When a player fills the trough with cavern grubs in the Thieving room, they are awarded with 115 points per grub. The number of grubs required scales linearly based on the total thieving level of players participating in the raid.

The minimum number of grubs required to complete the room is equal to 16 times the number of players in the raid, or 30 in a solo raid.

Note that this is different to the number of grubs that will grant points. The formula to get the total grubs that will grant points is as follows:

$\begin{array}{ll}\text{Max Points}& =max(4500,\lfloor totalThievingLevel/6\rfloor *150)\\ \text{Max Grubs}& =\lceil maxPoints/115\rceil \end{array}$

Tightrope

When a player uses the keystone crystal on the barrier in the tightrope room, some points are awarded.

Money making

The following money making guide is available for Chambers of Xeric:

Method	Hourly profit	Skills
Chambers of Xeric	8,286,010	90+ , , , , recommended 74+ recommended A party member with 55+ , 78+ , 30+ (strongly recommended) 70+ and 70+ recommended

Rewards

Main article: Ancient chest

A player receives a unique reward from the ancient chest.

Depending on the points obtained in the raid, players have a chance to obtain a reward from the Ancient Chest via the unique drop table. If the player does not roll into the unique drop table, they will obtain two rolls of standard loot instead (both a different loot), with their quantity depending on points obtained.

Regardless of whether a unique drop was obtained, players may always additionally obtain the dark journal if they do not have it already, and the metamorphic dust/twisted ancestral colour kit for players completing a challenge mode raid if successfully rolled on.

The beam of light above the chest will vary for the player depending on the loot obtained: by default, the light is white; if the player obtained an item from the unique drop table, it is purple; if the player obtained a metamorphic dust, it is turquoise; if the player obtained a twisted ancestral colour kit, it is green. If multiple such drops are obtained simultaneously, the light alternates between each appropriate colour.

Players can find books during the raid.

Book	Obtained via
Creature keeper's journal	Searching the corpse of the creature keeper in the Corrupted scavenger room.
Houndmaster's diary	Dropped by Muttadile.
Nistirio's manifesto	Dropped by Vasa Nistirio.
Tekton's journal	Dropped by Tekton.
Vanguard judgement	Dropped by Vanguard.
Transdimensional notes	Dropped by Vespula.
Dark journal	Found in the Ancient chest after defeating the Great Olm.

Players can earn Xerician capes through repeated completions of the Chambers of Xeric, claimed from Captain Rimor.

Accolade	Earned at
Xeric's guard	100 completions of Challenge mode
Xeric's warrior	500 completions of Challenge mode
Xeric's sentinel	1000 completions of Challenge mode
Xeric's general	1500 completions of Challenge mode
Xeric's champion	2000 completions of Challenge mode

Combat Achievements

Normal Mode

There are 29 Combat Achievement tasks (totalling 138 points) available for the Chambers of Xeric.

Name	Description	Type	Tier	Comp%
Dancing with Statues	Receive kill-credit for a Stone Guardian without taking damage from falling rocks.	Perfection	Elite (4 pts)	21.4%
Chambers of Xeric Veteran	Complete the Chambers of Xeric 25 times.	Kill Count	Elite (4 pts)	19.9%
Kill It with Fire	Finish off the Ice Demon with a fire spell.	Restriction	Elite (4 pts)	15%
Cryo No More	Receive kill-credit for the Ice Demon without taking any damage.	Perfection	Elite (4 pts)	17.3%
Undying Raid Team	Complete a Chambers of Xeric raid without anyone dying.	Perfection	Elite (4 pts)	24.8%
Redemption Enthusiast	Kill the Abyssal Portal without forcing Vespula to land.	Mechanical	Elite (4 pts)	17.2%
Perfectly Balanced	Kill the Vanguards without them resetting their health.	Mechanical	Elite (4 pts)	20.8%
Mutta-diet	Kill the Muttadile without letting her or her baby recover hitpoints from the meat tree.	Mechanical	Elite (4 pts)	27.7%
Shayzien Specialist	Receive kill-credit for a Lizardman Shaman without taking damage from any shamans in the room.	Perfection	Elite (4 pts)	16.7%
Together We'll Fall	Kill the Vanguards within 10 seconds of the first one dying.	Mechanical	Elite (4 pts)	14.8%
Blizzard Dodger	Receive kill-credit for the Ice Demon without activating the Protect from Range prayer.	Restriction	Elite (4 pts)	13.9%
Stop Drop and Roll	Kill Vasa Nistirio before he performs his teleport attack for the second time.	Mechanical	Master (5 pts)	17.4%
No Time for Death	Clear the Tightrope room without Killing any Deathly Mages or Deathly Rangers.	Mechanical	Master (5 pts)	10.9%
Perfect Olm (Solo)	Kill the Great Olm in a solo raid without taking damage from any of the following: Teleport portals, Fire Walls, Healing pools, Crystal Bombs, Crystal Burst or Prayer Orbs. You also cannot let his claws regenerate or take damage from the same acid pool back to back.	Perfection	Master (5 pts)	4%
Putting It Olm on the Line	Complete a Chambers of Xeric solo raid with more than 40,000 points.	Mechanical	Master (5 pts)	2.8%
Perfect Olm (Trio)	Kill the Great Olm in a trio raid without any team member taking damage from any of the following: Teleport portals, Fire Walls, Healing pools, Crystal Bombs, Crystal Burst or Prayer Orbs. You also cannot let his claws regenerate or take damage from the same acid pool back to back.	Perfection	Master (5 pts)	2.4%
Playing with Lasers	Clear the Crystal Crabs room without wasting an orb after the first crystal has been activated.	Perfection	Master (5 pts)	22.5%
A Not So Special Lizard	Kill the Great Olm in a solo raid without letting him use any of the following special attacks in his second to last phase: Crystal Burst, Lightning Walls, Teleportation Portals or left-hand autohealing.	Mechanical	Master (5 pts)	4.3%
Undying Raider	Complete a Chambers of Xeric solo raid without dying.	Perfection	Master (5 pts)	6.3%
Chambers of Xeric (Solo) Speed-Chaser	Complete a Chambers of Xeric (Solo) in less than 21 minutes.	Speed	Master (5 pts)	2.6%
Chambers of Xeric Master	Complete the Chambers of Xeric 75 times.	Kill Count	Master (5 pts)	14.7%
Blind Spot	Kill Tekton without taking any damage.	Perfection	Master (5 pts)	14.2%
Anvil No More	Kill Tekton before he returns to his anvil for a second time after the fight begins.	Mechanical	Master (5 pts)	25.4%
Chambers of Xeric (Trio) Speed-Chaser	Complete a Chambers of Xeric (Trio) in less than 16 minutes and 30 seconds.	Speed	Master (5 pts)	3.1%
Chambers of Xeric (5-Scale) Speed-Chaser	Complete a Chambers of Xeric (5-scale) in less than 15 minutes.	Speed	Master (5 pts)	2.3%
Chambers of Xeric (5-Scale) Speed-Runner	Complete a Chambers of Xeric (5-scale) in less than 12 minutes and 30 seconds.	Speed	Grandmaster (6 pts)	1.9%
Chambers of Xeric (Trio) Speed-Runner	Complete a Chambers of Xeric (Trio) in less than 14 minutes and 30 seconds.	Speed	Grandmaster (6 pts)	2.5%
Chambers of Xeric (Solo) Speed-Runner	Complete a Chambers of Xeric (Solo) in less than 17 minutes.	Speed	Grandmaster (6 pts)	1.5%
Chambers of Xeric Grandmaster	Complete the Chambers of Xeric 150 times.	Kill Count	Grandmaster (6 pts)	11%

Challenge Mode

There are 11 Combat Achievement tasks (totalling 58 points) available for the Chambers of Xeric: Challenge Mode.

Name	Description	Type	Tier	Comp%
Dust Seeker	Complete a Chambers of Xeric Challenge mode raid in the target time.	Speed	Elite (4 pts)	10.6%
Chambers of Xeric: CM (5-Scale) Speed-Chaser	Complete a Chambers of Xeric: Challenge Mode (5-scale) in less than 30 minutes.	Speed	Master (5 pts)	2.7%
Immortal Raid Team	Complete a Chambers of Xeric: Challenge mode raid without anyone dying.	Perfection	Master (5 pts)	8.2%
Chambers of Xeric: CM Master	Complete the Chambers of Xeric: Challenge Mode 10 times.	Kill Count	Master (5 pts)	7.3%
Chambers of Xeric: CM (Trio) Speed-Chaser	Complete a Chambers of Xeric: Challenge Mode (Trio) in less than 35 minutes.	Speed	Master (5 pts)	5.3%
Immortal Raider	Complete a Chambers of Xeric Challenge mode (Solo) raid without dying.	Perfection	Master (5 pts)	2.7%
Chambers of Xeric: CM (Solo) Speed-Chaser	Complete a Chambers of Xeric: Challenge Mode (Solo) in less than 45 minutes.	Speed	Master (5 pts)	1.8%
Chambers of Xeric: CM Grandmaster	Complete the Chambers of Xeric: Challenge Mode 25 times.	Kill Count	Grandmaster (6 pts)	5.7%
Chambers of Xeric: CM (Solo) Speed-Runner	Complete a Chambers of Xeric: Challenge Mode (Solo) in less than 38 minutes and 30 seconds.	Speed	Grandmaster (6 pts)	1.3%
Chambers of Xeric: CM (5-Scale) Speed-Runner	Complete a Chambers of Xeric: Challenge Mode (5-scale) in less than 25 minutes.	Speed	Grandmaster (6 pts)	1.6%
Chambers of Xeric: CM (Trio) Speed-Runner	Complete a Chambers of Xeric: Challenge Mode (Trio) in less than 27 minutes.	Speed	Grandmaster (6 pts)	2%

Music unlocked

Name	Unlock details	Music track
Upper Depths	Unlocked upon entering the Chambers of Xeric
Lower Depths	Unlocked upon descending to the middle floor of the Chambers of Xeric
Fire in the Deep	Unlocked upon descending to the lowest floor of the Chambers of Xeric

Pre-release teaser

On the 29th of December 2016, an Unannounced phenomena occurred, in which a chatbox message stated You feel a disturbance deep below the ground, as if some ancient beast had stirred. with the ground shaking at the same time.

Scrapped rewards

In advance of the raid's release, five Developer's Blogs detailing proposed rewards were released over the course of the latter half of 2016.

Many of the rewards proposed went through several changes before they were scrapped or failed a poll, or passed one.

Blog	Date
Dev Blog: Raid Rewards	28 June
Dev Blog: Raids Rewards 2	13 July
Dev Blog: Raids Rewards 3	16 August
Dev Blog: Raids Armours & Rewards	26 August
Dev Blog: Raids Rewards	28 October

Ancient insignias

Ancient insignias were proposed to be equipped in the ammunition slot, providing combat stats and effects.

They were scrapped in the second rewards blog following "a large amount of feedback from the community".

Insignia	Combat stats	Effect	Name notes
Yumi insignia	+5 Ranged Attack +5 Magic defence	10% chance to hit two additional targets	Yumi (弓) is Japanese for bow.
Seji insignia	+5 Magic Attack +5 Stab, Slash, and Crush defence	10% chance to negate rune costs (stacked additively with staff of the dead)	Seji (世辞) is Japanese for compliment/flattery.
Benkei insignia	-10 Prayer bonus	Boosts stat boosting prayers by 10% (ex. Eagle Eye boosted Ranged by 16.5% instead of 15%)	Benkei (弁慶) is the name of a 12th century Japanese warrior monk, who is commonly depicted as a man of great strength and loyalty.
Kabe insignia	+5 Defence bonus across all styles	None	Kabe (かべ) can be written as "壁" in Japanese, which translates to wall.
Risutoa insignia	+2 Attack bonus across all styles +2 Defence bonus across all styles	Special attack energy regenerates twice as fast outside of combat	Risutoa (リストア) is a Japanese transliteration of "restore".

Forgotten prayers

Initially, six prayers were proposed to be unlocked via a single tradeable scroll obtained as a reward. The scroll will prompt players to choose which prayer to learn, after which it would crumble to dust.

Level	Prayer	Effect
55	Preserve	Boosted stats last 20% longer.
65	Poison Absorb	Poison damage that would have been dealt to the player drains prayer points instead.
74	Rigour	Boosts Ranged attack by 20%, Ranged strength by 23% and Defence by 25%.
75	Divine Grace	When running, prayer points are drained instead of run energy.
77	Augury	Boosts Magic accuracy and defence by 25%.
85	Venom Absorb	Venom damage that would have been dealt to the player drains prayer points instead.

In the third rewards blog, the requirements for Rigour and Augury were swapped, and a level 70 Defence requirement was added to both prayers.

In the fourth blog, the Divine Grace, Poison Absorb, and Venom Absorb prayers were scrapped.

High-tier armour

The Kodai robes, elder armour, and twisted armours were first proposed in the fourth rewards blog, and was polled in Old School Content Poll 47: Rewards for Raids & Slayer, failing the poll by 2.6% of the required votes to pass.

It was repolled in Old School Content Poll 48: Rewards for Raids & Quality of Life a month later to emphasise that the set degrades with a 100,000 repair cost for each hour of usage. This failed the poll by 10.2% of the required votes to pass.

In order to assess what changes should be made to the armours to have it pass a poll, a new poll, Old School Raids Armours Survey was made available. After feedback, the final rewards blog proposed adjusted stats, and the final rewards poll, More Raids Rewards, split each armour set into its own question. All three armour sets failed by around 4%.

Kodai robes

First proposed in the first rewards blog, the robes required level 75 Magic & Defence to equip, and were proposed to be "slightly more powerful than Ahrim's robes" and undegradeable.

Item		Attack bonuses					Defence bonuses					Other
Kodai hat		0	0	0	+7	-2	+17	+17	+17	+8	0	0	0	0%	+1
Kodai robetop		0	0	0	+35	-10	+60	+45	+75	+35	0	0	0	0%	+1
Kodai robelegs		0	0	0	+25	-7	+40	+40	+40	+25	0	0	0	0%	+1
Totals		0	0	0	+67	-19	+117	+102	+132	+68	0	0	0	0%	+3

On the release of the second blog, the requirement to wear them was changed to level 75 Magic & Prayer, and their stats changed, as there were concerns of the price impact on Ahrim's robes.

Item		Attack bonuses					Defence bonuses					Other
Kodai hood		-5	-5	-5	+7	-4	0	0	0	+3	0	0	0	0%	+3
Kodai robe top		-7	-7	-7	+35	-20	0	0	0	+10	0	0	0	0%	+5
Kodai robe legs		-6	-6	-6	+25	-14	0	0	0	+8	0	0	0	0%	+4
Totals		-18	-18	-18	+67	-38	0	0	0	+21	0	0	0	0%	+12

With the release of the fourth rewards blog alongside elder and twisted armour, the Kodai robes were reworked entirely, again requiring level 75 Magic & Defence to equip, and being given increased bonuses. As a tradeoff, they degrade and become unusable after 10 hours of continuous usage in combat.

Item		Attack bonuses					Defence bonuses					Other
Kodai hat		-5	-5	-5	+12	-4	+18	+16	+20	+8	0	0	0	0%	+2
Kodai robetop		-7	-7	-7	+38	-20	+58	+42	+68	+35	0	0	0	0%	+2
Kodai robelegs		-6	-6	-6	+30	-14	+36	+35	+40	+25	0	0	0	0%	+2
Totals		-18	-18	-18	+80	-38	+112	+93	+128	+68	0	0	0	0%	+6

After having failed a poll twice, the final rewards blog did not adjust the Kodai robe's stats; rather, it proposed a second set of magic robes, the ancestral robes, which placed emphasis on magic damage. The ancestral robes passed the final reward poll, while Kodai robes did not.

Elder armour

A top-tier set of melee armour requiring level 75 Defence to equip, the set will degrade and become unusable after 10 hours of continuous usage in combat.

The set was proposed to have the following stats:

Item		Attack bonuses					Defence bonuses					Other
Elder helm		+3	+3	+3	-5	-5	+60	+62	+60	-10	+52	+5	0	0%	+2
Elder platebody		+5	+5	+5	-15	-10	+130	+125	+110	-20	+135	+6	0	0%	+2
Elder platelegs		+4	+4	+4	-10	-8	+90	+90	+85	-15	+95	+4	0	0%	+2
Totals		+12	+12	+12	-30	-23	+280	+277	+255	-45	+282	+15	0	0%	+6

Following player concerns on the impact elder armour will have on the price of Bandos armour, the strength bonus was reduced to match them, alongside a slight increase to the elder armour's magic defence:

Item		Attack bonuses					Defence bonuses					Other
Elder helm		+3	+3	+3	-5	-5	+60	+62	+60	-2	+52	+5	0	0%	+2
Elder platebody		+5	+5	+5	-15	-10	+130	+125	+110	-8	+135	+4	0	0%	+2
Elder platelegs		+4	+4	+4	-10	-8	+90	+90	+85	-5	+95	+2	0	0%	+2
Totals		+12	+12	+12	-30	-23	+280	+277	+255	-15	+282	+11	0	0%	+6

After having failed a poll twice, the stats of the elder armour were adjusted in the final rewards blog, which consisted of a minor increase to the set's magic attack bonus.

Item		Attack bonuses					Defence bonuses					Other
Elder helm		+3	+3	+3	-2	-5	+60	+62	+60	-2	+52	+5	0	0%	+2
Elder platebody		+5	+5	+5	-8	-10	+130	+125	+110	-8	+135	+4	0	0%	+2
Elder platelegs		+4	+4	+4	-5	-8	+90	+90	+85	-5	+95	+2	0	0%	+2
Totals		+12	+12	+12	-15	-23	+280	+277	+255	-15	+282	+11	0	0%	+6

Twisted armour

A top-tier set of ranged armour requiring level 75 Defence to equip, the set will degrade and become unusable after 10 hours of continuous usage in combat.

The set was proposed to have the following stats:

Item		Attack bonuses					Defence bonuses					Other
Twisted coif		-6	-6	-6	-6	+15	+7	+7	+7	+12	+10	0	+2	0%	+2
Twisted body		-10	-10	-10	-10	+38	+59	+51	+64	+72	+61	0	+3	0%	+2
Twisted chaps		-8	-8	-8	-8	+25	+34	+28	+36	+42	+35	0	+3	0%	+2
Totals		-24	-24	-24	-24	+78	+100	+86	+107	+126	+106	0	+8	0%	+6

Gallery

• 

  Pre-release view of the rooms

• 

  Pre-release view of the rooms

• 

  Pre-release view of the rooms

• 

  Pre-release view of the rooms

• 

  Pre-release view of the rooms

• 

  A piece of artwork depicting a group of players fighting the Great Olm.

• 

  Login screen for the Chambers of Xeric update.

Changes

Date	Changes
26 March 2025 (update)	Lore books will no longer drop once a player has read them.
22 January 2025 (update)	Further changes to Chambers of Xeric points have been made to prevent megascale boosting: Personal points are no longer capped at 131,071 during the raid, while regular loot reward rolls are still capped at 131,071 points.
8 January 2025 (update)	To prevent megascale boosting abuse at Chambers of Xeric, we've changed how unique rewards are distributed. Now players who leave a raid in progress are eligible to receive unique items, but if they would do so, the reward is discarded instead. This ensures that leaving a CoX raid no longer transfers loot chances onto remaining participants.
21 August 2024 (update)	Ironmen can now pick up the keystone crystal if a teammate drops it in the Chambers of Xeric, with points still being awarded to the player who initially collected it.
26 June 2024 (update)	A bronze axe spawn has been added to the muttadile room, useable by main and ironman accounts. Upper levels of the bat rooms should no longer render over the player character model.
12 December 2023 (update)	Skeletal Mystics now scale correctly when manually scaling upon raid creation. Players may no longer place kindling in storage units. Tumeken's shadow will now 'splash' on crabs if the player's Magic bonus is -64 or lower. Potions now correctly award points when sipped.
29 November 2023 (update | poll)	General Added a new 'Reload' option to the lobby staircase, allowing the raid leader to generate a new layout and boot anyone in the current instance. Added a new scaling option to the recruitment board party interface, allowing the raid leader to increase the raid's difficulty without requiring additional players. Energy pools have been placed throughout the raid. Various unnoted consumable items (namely common food and potions) will now appear to other players when dropped. Sped up the growth times of buchu, golpar and noxifer plants. Scavengers Since scavengers roll multiple drops, it is possible to get multiple sets of the components above. Tweaked drops so that whenever any potion secondary would be dropped, scavengers now drop 3-11 stinkhorn mushrooms, 3-6 cicely and 5-14 endarkened juice. Scavengers now only roll two drops at a time. Sped up both the Mining and Woodcutting shortcuts, which now provide points comparable with the boulder shortcut. Mallignum root planks are now stackable. Tekton The first dragon warhammer special attack against Tekton is now guaranteed to hit. Tekton no longer resets his Defence when healing at the anvil. Crabs Players can no longer 'splash' on crabs if their Magic bonus is higher than -64. Attacks no longer have any delay after hitting a crab. If your attack changes the crab's colour, you will not automatically re-attack. Ice Demon Kindling is now stackable, up to a cap of 28. Lighting braziers and burning kindling now provide more points. Ice demon drops stinkhorn mushroom, endarkened juice and cicely to each player when defeated. Reduced the ice demon's Magic defence from 60 to 40. Vanguards Vanguards drops have been standardized with overload drop mechanics remaining unchanged. Melee Vanguard now drops 2 Xeric's aid and an elder potion. Ranged Vanguard now drops 1 Xeric's aid, 2 revitalisation potions and a twisted potion. Magic Vanguard now drops 1 Xeric's aid, 1 prayer enhance and a kodai potion. Thieving Increased the chance to successfully steal from chests. Cavern grubs are stackable up to a cap of 28. Successful chest openings now guarantee a minimum of one cavern grub. Slightly increased the points given per cavern grub. Players now receive stinkhorn mushrooms, endarkened juice and cicely upon completion. Vespula Increased lux grubs' HP from 100 to 125. Medivaemia blossoms now heal lux grubs for 35 HP, up from 20. Reduced the Ranged and Melee strength of Vespula and vespine soldiers. Reduced abyssal portal healing for vespine soldiers. Vespula now drops a guaranteed Overload(+). Vasa Nistirio Reduced Vasa’s Ranged defence. Vasa will now only heal if a crystal isn't destroyed in time. Vasa now drops a guaranteed Overload(+). Mystics A handy set of portals will now appear after all mystics are defeated, allowing for easier traversal across the room. Muttadiles Adjusted the damage formula for the meat tree to be more consistent. Both muttadiles will attempt to heal at the meat tree when reduced below 50% HP (up from 40%). Both muttadiles can now be damaged while frozen, even if they were trying to move towards the meat tree. Reduced the max hits of both muttadiles. Big muttadile will now only swap between Magic and Ranged attacks after using the same style three times, not counting Melee attacks. Great Olm Olm's portal swap special now spawns a portal within 10 tiles of players in a solo encounter. Olm's healing pool attack now has a 'cooldown' of 10 attacks.
3 May 2023 (update)	A bank chest has been added inside the raid lobby, which can be used prior to beginning a raid. Two storage units have been added to the Great Olm's antechamber for ease of access without having to climb back up a level.
27 July 2022 (update)	For Ultimate Ironman players, any unclaimed Chambers of Xeric rewards may now be dropped outside the Chambers rather than being put in the private storage, since Ultimate Ironmen cannot use it.
9 December 2021 (update)	The minimum HiScores 'killcount' required for Chambers of Xeric Challenge Mode has been lowered from 10 to 5.
16 June 2021 (update)	Level scaling can be removed by talking to Captain Rimor. A default chest has been added to store 25 items for personal use. Antipoisons for the raid can be made inside. Vanguards can be damaged during their transition phase. Great Olm's fire wall attack can be extinguished with ice spells. A pickaxe spawn has been added to all Guardian rooms. More herbs can be harvested on average in larger raid sizes. Points scale linearly with combat level, allowing for more consistent point gains for players of specific levels. Challenge Mode's submerged Muttadile deals 20-80% of its maximum hit; this ensures more consistent damage, but avoids potential combos from both it and its young. Challenge Mode Vasa's crystals have had their challenge mode modifier removed. A Raid Party can receive up to six unique rewards from a raid if they earn enough points.
20 January 2021 (update)	Multiple graphical wall issues within a raid have been fixed.
13 January 2021 (update)	The Chambers of Xeric Party Board will now let you unselect the Challenge Mode option correctly.
11 November 2020 (update | poll)	Maps pools have been updated; the large pool now uniformly contain five combat and three puzzle rooms per raid. The regular pool now has equal amounts of small and medium raids. To complement this change, a secondary checkbox has been added to the Party Board outside the Chambers of Xeric that lets you toggle between regular and large map pools. Scavengers will spawn more consistently, with a preference for locations near players. When killing a scavenger, a message will appear that makes it clear who received the drop. If an Iron player deals the most but not all of the damage to a Chambers of Xeric boss, all other raiders will receive a message announcing that they have earned the drop.
16 July 2020 (update)	An issue in which players would be hit by Vespula's melee attack if the portal was closed has been fixed.
2 July 2020 (update)	An issue in which points were not being awarded in certain challenge rooms has been fixed.
18 June 2020 (update | poll)	A toggleable healthbar interface has been added to Tekton, Vespula's Abyssal Portal, Muttadiles, Vanguards, Vasa Nistirio and the Great Olm. For the Vanguards, the HUD will show each of their healthbars individually. Players can now right click the tool rack in resource rooms to select a specific tool.
28 May 2020 (update | poll)	The Vanguards have received additional changes. Players with higher Thieving levels will now have a chance of receiving multiple grubs from a chest. Potion drops now have a higher value, and are thus more likely to appear on top of the lootpile alongside raid supplies and bones. Players can now build an extra large storage chest with a capacity of 1,500. To make it, 99 Construction and 8 planks are needed. Players now have the chance to obtain the metamorphic dust again even if they have already previously obtained it in Challenge Mode. Unique rewards collected from the reward chest will now be given as items rather than banknotes.
21 May 2020 (update | poll)	The Vanguards have received several changes which aim to make the encounter less annoying while preserving its difficulty. Fastest completion times of both regular and Challenge Mode are now displayed in the adventure log. The loot table of scavenger beasts has been rebalanced to include a more reasonable amount of cicelies and endarkened juice. One of the possible orientations of the Jewelled Crab room has had its crystal positions altered. An issue in which players would be hit by Vespula's melee attack if the Abyssal portal has been destroyed has been fixed.
9 January 2020 (update)	Lizardman Shamans, Skeletal Mystics and Stone Guardians now tell the party which individual received the seed drops upon death, if applicable.
12 September 2019 (update)	Stun effects in the Chambers of Xeric can no longer be dodged by lighting fires.
14 March 2019 (update)	Enchant spells are no longer offered in the Chambers of Xeric, as the stat-boosts in there are unusually large and were not intended for getting oneself permanent access to items unrelated to the Chambers.
7 March 2019 (update)	NPC stats are now scaled based on the player with the highest combat stats rather than the average combat stats of all party members
28 February 2019 (update)	Trees found within the ice demon room in Chambers of Xeric are now less likely to fall. Players will now receive more wood than before when successfully chopping trees within the room based on Woodcutting level. As saplings can now give more wood than before, the Woodcutting XP gained per item of kindling has been reduced slightly. The ice demon's defences are now lower than before and its magic defence is now calculated from its defence level rather than magic, making it weaker to spells overall, including its additional weakness to fire spells. In Challenge Mode, the 5k bonus points are now added to the team's reward rather than individual party members. A bit of wall sticking out of one of the Skeletal Mystic's rooms in the Chambers of Xeric has been removed. Tweaks to the Vanguard's reset mechanic have been made to ensure they are reset correctly
14 February 2019 (update)	Great Olm's flame attack can now be doused with Humidify and vessels of water. Elite clue scrolls are now an additional reward instead of replacing the second reward. Monster Examine may now be cast on all monsters in the raid.
10 January 2019 (update | poll)	Dragon sword, dragon harpoon and dragon thrownaxe were removed from the drop table and moved to monsters in Karuulm Slayer Dungeon. This did not affect the rarity of other drops, as they were re-weighted.
17 May 2018 (update | poll)	Challenge Mode was implemented, providing a more difficult raid with every room in a static layout.
8 February 2018 (update | poll)	A bronze axe spawn was added in the ice demon room. Previously, a tinderbox was also added. Whenever a mini-boss is killed, a broadcast will go out to player as to who obtained its drops. The party interface now shows how many times the player has successfully completed the Chambers of Xeric. The three storage chests were modified to now require 2, 4 and 6 mallignum root planks respectively, down from 4, 8 and 15.
4 May 2017 (update)	Long bones, curved bones, and rune pouches can now be stored within raid private storage. Fixed an issue where the Muttadile would sometimes become permanently invincible.
23 February 2017 (update)	You now have a chance of receiving Elite clues from Raids. A notification is now given to the party if someone clears a farming patch in raid.

Trivia

Concept art of the Paradigm of Exodus, a raid whose concept was later reshaped into the Chambers of Xeric.

• The Chambers of Xeric was originally proposed in 2014 as the "Paradigm of Exodus", a large dungeon found in and around an active volcano, allowing 5 to 30 players to take on powerful monsters and solving puzzles in a randomly generated layout, with a boss at the end of the raid.
• The Chambers of Xeric is currently the only raid that:
  • Allows teams to roll on multiple unique drops, provided they meet the requirements.
  • Has its pet drop tied to unique rewards.
  • Has a randomly generated layout.
  • Has a dedicated resource room.
  • Has enemies in the raid with no combat levels (outside of the Great Olm).
  • Does not have a joke reward if the player finishes the raid with low points.
  • Lacks a team scoreboard.
  • Does not have a death system of any sorts - players that die in the raid are returned to the start of the previous floor and the raid does not have a death coffer.
    • This makes the raid safe for hardcore ironmen players, though group hardcore ironmen are an exception and will lose a life/status on death.
  • Requires players to be in an eligible chat-channel in order to participate.
  • Does not require a quest to access.

See also

• Other raids:
  • Theatre of Blood
  • Tombs of Amascut