Serious Sam: Siberian Mayhem - Roadmap? (2025)

- (WORK IN PROGRESS) -
Based on the recommendation from Bastian Reader, HUN playmore (TA)
and the work done by WarS' & Emi (Steam)

=============== ROADMAP ===============

Apparently can tackle entire game Solo, despite the Coop achievement.
But for ease, help collecting items & fun, its been recommended to do a couple of playthroughs in Coop

1st Playthrough -------------------------

- COOP x4 > EASY > meant for collectibles, miscellaneous, and weapon achievements.
Get familiar with the game and weapon/item pickup locations.

- COLLECTABLES
COOP > everyone individually pickup collectables
Collectible achievements are host only.

SOLUTION - AFTER Easy completion > Each player > HOST a coop level
> pick up 1 collectible of each (MediaNote / Dmitry Audio / GeneralBrand Audio)
to unlock the following achievements:

“No Stone Unturned” - ALL Secrets
“Breaking News” - All PrintMedia Notes
“More Complaints” - ALL Dmitry audio & text log
“Traitor’s Tale” - ALL General Brand audio logs
"Serious Archeologist" - ALL 5 of the secret retro levels

2nd Playthrough -------------------------
- COOP x4 > SERIOUS difficulty > Enemy multiplier set to atleast x2
Wasn’t too difficult with 4 people and powerful weapons/items.
MassacreParty - Unlocks for host only.
- AFTER SERIOUS completion > Each player > HOST a Coop on LAST level
> MassacreParty achievement will unlock after loading in.

The Massacre Party achievement in Serious Sam: Siberian Mayhem worth 552 pointsComplete Siberian Mayhem on Serious difficulty in co-op with enemy multiplier set to at least x2

3rd Playthrough-------------------------
- SP > SERIOUS difficulty
Playthrough on hardest difficulty ment for:

- SP > NO learning a single S.A.M skill > CompleteGame
- Never HoldA in Netrisca interface - dont use a S.A.M egg
- Warning: end of first level, box requires to be opened to trigger a monsters wave.
Be sure to not activate a S.A.M. bonus!

- SP > Serious difficulty > Final Boss > NO loading mid-battle savegames
- use equipment & unlimited ammo - spam hacked drones & mini nuke through playthrough
boss fight just spam hacked drones > boss die fast.

- SP > Serious difficulty > CompleteGame

The Old School achievement in Serious Sam: Siberian Mayhem worth 464 pointsComplete Siberian Mayhem without learning a single S.A.M skill in Singleplayer

- MEDALS - Survival Challenges -------------------------
SP > SURVIVAL

- Get any medal on Castle of Pain survival level
Survive 4 minutes in this map described on "Hard" difficulty.

Advice: RUN - Use crossbow
-ultra-resistant medevial warriors - Dont use ammo to kill
-unless they low health > use crossbow
-Common Aludran Reptiloid (GREEN) - crossbow kill as fast as possible when they spawn.
> use some ammo to kill others monsters

- Get any medal on Horus Sanctuary survival level

- Get any medal on Kleer Fortress survival level
Survive 4m30s in this map described on "Medium" difficulty.

- Get any medal on Dragon Gates survival level

- Get any medal on The Snowrider survival level
Survive 5 mins in this map described on "Easy" difficulty.

- Get any medal on Monkey Canyon survival level
Survive 4 mins in this map described on "Hard" difficulty.

- either Crouch in corner OR use Hoverbike for first 3mins
- 9mins for Gold
- Orange target make Traps - warning can halm player
- use Duel wield Burner gun or Minigun - most ammo around

- Get a gold medal on any survival level

=============== COLLECTABLES ===============

85 - Secrets - “No Stone Unturned”
5 - All PrintMedia Notes - “Breaking News”
5 - Dmitry audio & text log - “More Complaints”
2 - General Brand audio logs - “Traitor’s Tale”

Guide = https://steamcommunity.com/sharedfiles/filedetails/?id=27325...
Shows Collectables/Secrets/Achievements in order
(unsure if all chances for Achievement are outlined correctly)

Below is a summery of which achievements are along the way
(WORK IN PROGRESS)

=============== LEVELS ===============

1 A Smell Of Petroleum Prevails ------------------------- -------------------------
-

= Black Gold - reward SAM egg
Beach > OilRig > DistressCall > 2Tall Barricaldes > inbetween > follow to 2nd OilRig

-

= 2
-

-

= 16
-Make sure health is NOT full
cannot pick up the Extra Large Health (red heart pickup) that spawns after killing all the enemies in the secret arena.
A - "Ok, And?" - Die in frozen water
A - "Dogs and Frogs" - Kill an Aludran Microhopper
8 -
A - "Everyone Is A Minesweeper" - Die in a minefield

SideObjective

Complete the level

2 The Song Of The Stormbringer ------------------------- -------------------------
-

= Energize - reward 2 Rage Serums
-

= 2
-

-

= 11
A - "Oops, I dropped it" - Rid the monster of its misery
Dont shoot sleeping Minor Bio-mechanoid (BLUE)
Use the crane to drop a box over its head.

A - "The Operator" - Use Crane near start of map to move crates to form bridge.

7.
A - "Extremely Uncool" - Kill a Draconian Burner

9.

A - "Look Ma, I'm a Lumberjack!"
Complete the mech sequence and kill all big enemies without shooting
Enter the Mech > ChainSaw ONLY

SideObjective

Complete the level

3 Siberiade ------------------------- -------------------------
-

= Hide and Seek - a Hoverboard Scooter and three L.I.F.E. gadgets
-

= 2
-

= 1
-

-

= 27
A - "Inborn Plumber" - Resolve the 3 plumber puzzles and get the reward.
3 puzzles are hidden into that big snowy area
do not forget to pick up the purple card.

A - "Death from Above" - Use the T.A.C.T. for the first time
Complete first puzzle to earn T.A.C.T

A - "All Ingenious is Simple" - Resolve the puzzle
resolve a puzzle to open the gate which is closing the bridge access.
Quick save before resolving it to unlock the next achievement.
Resolving the puzzle is going to unlock this achievement.

A - "All Ingenious is Shot" - Shoot the puzzle
resolve a puzzle to open the gate which is closing the bridge access.
Make a quick save before destroying it to unlock the previous achievement.
Destroying the computer terminal with a rocket is going to unlock this achievement

SideObjective

Defend the Church

Complete the level

4 Roadside Picnic ------------------------- -------------------------
-

= Alpha and Omega - two Black Hole gadgets
-

= 2
-

-

= 16
A - "Back To The Future" - Use the Hoverboard Scooter for the first time
under the bridge (at spawn).

A - "Fight Fire with Fire" - Kill Draconian Burner(RED) with a Burner gun

A - "David and Goliath" - Destroy an Octanian Sentry Tower using only the hoverboard
under the bridge (at spawn).
Octanian Sentry Tower (turret with tenticles) into the tank area.
Clean the area and be sure to not damage the Octanian Sentry Tower. Leave the tank and use your Hoverboard Scooter to fully kill the tower.

A - "Hole-in-One" - Use a Black Hole to kill all enemies during the final defense
after the train animation (connecting the wagon to its locomotive), use the 2 Black Holes one at a time to eliminate the full wave. For information, you can find those gadgets into that same map through its side objective. If you are not sure which wave you've to end with those gadgets, this is the one having a Saggitarian Sidewinder, that kind of flying iron snake

A - "All Ingenious is Hard" - Resolve the hard puzzle.
after the tank area, there is on your left the side objective.
Near the beginning on the bunker, there will be a tunnel with a turning red light, having a lot of Processed Anthropolyp (YELLOW Punk) and a Draconian Burner (RED).
In this tunnel, there is a small room on your right. Break all of the boxes to make appear a secret area. Resolving the puzzle in it is going to unlock this achievement.

A - "Combustion Tamer" - Kill 30 enemies while riding one Draconian Burner
Tourist' difficulty and with infinite ammo.
After the Tank area, there is the side objective = Alpha and Omega
Save the game after killing the Adult Arachnoid (RED Scorpian) at the entrance of the bunker.

A - "Iron Caput" - Don't ride the tank - become the tank
Complete the tank area without entering into the tank.
Tourist difficulty. The tank area isn't far away from the beginning of the map.

SideObjective

Complete the level

5 Crime And Punishment ------------------------- -------------------------
-

= 3
-

-

= 15
A - "Critical Temperature" - Kill 10 enemies with one Burner explosion
Ambush area. Wait till Gnaars are stacking, use the Burner for a big boom

A - "Line up, please!" - Kill 5 enemies with one Crossbow shot
last level after the ambush area. There will be a long corridor. Trigger the first, the second or the wave of the next area before to get back to this corridor to get 5 enemies into the same line...(further details)

Complete the level

------------------------- -------------------------

Feel free to mention if anything out of order/missing