It's a pretty good FPS. Nothing overly complex once you get used to using your OWL, although I do find the OWL mostly gimmicky as a way to use the touchpad. The levels are fairly linear, but you can run through them a few different ways (stealth, hacks, gunfire). The story is pretty engaging and reminds me of Terminator: Salvation except without robots and instead the bad guys in this. I'm enjoying it.
Multiplayer is like COD-lite. No vehicles, pretty small maps, multiple modes and unlockable weapons/attachments/etc. Nothing I'd write home about and probably won't play much MP after new games come out.
I'd give it a 7/10 personally. Good game to play.