OMG! This game Rocks!
The weapons are realistic and the shootout mechanics are incredible. Shoot someone with a shotgun to the chest and POW a huge mist of red permiates the air, the poor guy hits the ground with the force only a shotgun can produce. Either that or it sends them backwards. Blast someone with a full auto weapon to the chest and watch the victim flail wildly as they are riddled with bullets and blood spurraticly splatters about, then they fall to the ground. (When the gore is turned on that is)
If you want a really fun game with some suprisingly unique FPS gaming aspects like the ability to go prone (Laying down) and crawling your way under a bad guys hut/building rolling onto your back and riddle them with bullets from below. Or maybe you'd prefer to sneak up behind your enemy and stick a butterfly knife into thier skull for a quick and silent kill. If so then I highly suggest this game. It's one of the best I've played in awhile.