Red Faction - Can't Blow Stuff Up

If you blow enough walls and stuff up, eventually you won't be able to blow up anything, because there is a maximum amount of destroyable stuff.

Red Faction - "silenced" pistol

It's all about perfect timing, shoot and pause the game at the same time with the pistol, and if you time it right, when you unpause the game, the gun will shoot without making noise.

Red Faction - Kill Fish

On the first level, there is a dark cave on your left not long after the beggining of the level, but you will need to get some explosives to get through it, once you have explosives walk into the cave and there is a hole in the wall, lay some explosives on it, and when you go in the room there is a pool of water filled with fish that can be killed.