This is a good, solid game. Nothing fancy, just does exactly what it says on the tin. Its an enjoyable FPS, plenty of things to shoot at, blow up, and cause havoc with. It is pretty short, but when you throw in the multiplayer stuff, its got reasonable longevity.
I enjoyed the plot, and you have/ gain some nifty abilities and weaponry throughout the game.
Interestingly, this was supposed to be a Deus Ex game, and both feels and plays like one (although the interactive element has been stripped away)
If you like a good old fashioned shooter, this ones for you............