The day I bought Killzone 2 I wondered if it was worth getting over the Fallout 3 collectors edition, well the game had blown my mind right out of the gate. Unfortunatryl I never got that collectors edition. It may have been the best FPS released at that time, I was glad to own a PS3.
The Game: Lets start with the presentation. Back when this was released it had the best graphics possible, I was stunned at the dark and gritty environments, it looked incredible. The sound design was better than any other fps I could think, both this and Killzone 3 have the best sound for any shooter, period. The soundtrack is easily in the top ten best original scores for video games, it is still incredible to listen to till this day. I personally think this game looks and sounds better than Uncharted 2 which came out the same year.
Game play: People like to complain about the sluggish controls, I personally like it, it gives the game it's own unique feel. I think there is around ten guns to use throughout the single player campaign, the electricity gun you get in the refinery was pretty fun to use. I like the Helghast weapons more than the ISA ones. My biggest complaint is that L1 is mêlée, I would have preferred it to be R3, but instead aiming down the sights is R3.
The campaign: I've played between 25 and 30 hours on the single player story, yeah I enjoyed it that much. I personally hated the mission on the ISA ship, the rest was great. The urban combat was about as good as it could get in a video game, take note other developers this is how you do it. It definitely still holds it's own, it felt more realistic than Killzone 3. Killzone 3 had too many goofy action scenes, it just felt weird, like how Dead Space three just feels weird. I didn't play the multi-player enough to review it. The skirmish game mode was really fun, I played a lot of that.
Killzone 2 is definitely a must play shooter, it's a cut above most of the kid friendly garbage we get for shooters today.
