This is a fucking dope-ass FPS, and this comes from someone who doesn't enjoy FPS' all that much. The movement speed, arena-style levels, and enemy attack patterns all encourage a brisk playstyle. All the available weapons and mods are both versatile and fun in their own right, making you want to use each one. The story was serviceable, but I could definitely do without some of those gimmicky-ass challenges. I wish there were more FPS' like this out there.