this game is not that bad as you think....
the background story is the same as in the pc version but the levels are different ( rooms and hallways and cameras...) and you can recognise conversations in the pc game.
the multiplayer mode is the addictive but som times fustrating (when you're losing) part of the game. the mercenary weapons are too strong cause if you hold the fire button it will kill you in 2 seconds. but it's cool when you can say to your enemy hey pal i got you now!
so don't think you must buy it but its not a failure....