It's a pretty nice shooter... when it works. id Tech 5 is the best, and yet somehow, also the worst engine I have seen in my life - to actually be able to play the game without the world looking like a used toilet paper that has been eaten up by an alligator and shat out in a swamp, you need a PC that can run Crysis 2, Battlefield 3 and Fallout 3 at the same time at 60 FPS :/
That "mega-texture" bullshit is killing the game - before I installed the patch, I just had texture pop-in, now after the patch, the game somehow turned into the brown version of Matrix. I'll post screens when I have time.