For those of you who don't know how to use Google, the crash issues with this game are written about all over the Ubisoft and GRAW2 forums. Rather than writing (and I use that term loosely!) a critical review because you couldn't fix a simple problem, you'd be better off finding a solution, then trying the game and writing a review that actually means something.
The crash problem occurs on users with nvidia graphics cards, and it's a known and documented issue which has existed since GRAW1.
The fix is simple, the default setting for Frames To Render Ahead is 3 for nvidia cards, this is what causes the conflict with the PhysX accelerator.
You need to set it to 0.
I got stuck on an early stage, it crashed after max 2 mins of gameplay.
Since changing the setting above, I've played through the majority of levels and am now nearing the end of the game, and have not experienced a single crash since.
The game is OK, not excellent. The AI for your team is pretty poor actually, but then I just leave them in one position and go and take out the enemy myself - got no time for carrying imbeciles!
The AI for the enemy is only any good once they're alerted, otherwise they're as thick as 2 short planks.
In short, not a great game, although there are some excellent elements, but not a bad one either.
For all FPS fans, R6 Vegas was better, but this will help fill the gap until Crysis comes out!