Pretty graphics try to cover up the extremely shallow gameplay and annoying AI. Stay away from this crap.
The gameplay had a couple of good ideas but is very, very boring and hollow. You sneak around shooting people all game, sounds okay. But the AI is completely broken, one time you can sneak right past an enemy then the next time you could be 100 meters away in tall grass and they'll turn around and start shooting then before you know it 55 other guys come out of nowhere and start shooting you as well. The nice graphics don't hide the fact that this game is boring, repetitive, and a waste of money.
Honestly, just don't get this game, even as a rental. The most fun I had in this game was running around shooting chickens, and when I turned it off to play Gears of War.
Just don't get it.