My buddy picked it up last night, then passed out after the first couple missions in campaign. So I played pretty much the entire game, beat it in 4 hours. Two guys I know advised on the game, one is a systema instructor/ex-Spetsnaz and one runs a combat school along with a few other related companies, and seeing their influence on the game was really the only reason I was looking forward to it.
Good:
Seeing stuff in the combat scenes I recognized was pretty cool.
More detailed weapons, mainly the optics. I especially liked the 3x magnifier with the EOTech and the MRDS on the sniper rifle.
Graphics were great.
Bad:
Missions were pretty short.
Campaign was a lot shorter than expected and not as captivating as the promos made it out to be.
Some instances of lag.
Exploding cars. I like a shooting game to be realistic... cars don't explode when you shoot them.
In the sniper mission at the church, the sniping is pretty video gamy-ey... don't need to lead shots, scope is perfectly steady without having to do anything, etc.
Along the lines of being realistic, I think it'd be cool to throw a weapon malfunction in here and there. Yet to see that in a video game though.