I had no issues on an ATI 5770 gpu, after installing 11.10v2 drivers from AMD the game ran on full spec 1920x1080.
Decent story ( based on a novel) graphics are great, gameplays fantastic, AI and character animation are very good.
The people complaining of it being a console port are wrong, the whole issue happens because of the new pc developed technology not working with certain gpus.
My friends have the following cards and played without problem, 5770,5650,6850,6970 and a 560 and 580, and they all worked no problems. I'm sure the game will run on most systems now the patch is out.