Is the combat as slow and clunky looking as it seemed in the trailer?
If you don't have a Nvidia graphics card it wont turn on the PhysX stuff. The same goes for multisampling. One of the best features for me, although it is little, is the seem less integration of both Xbox controller and keyboard. On the menu it automatically changes all the controls i.e. A button and left click depending on which you are using. Just shows a bit of thought for the pc gamers.