My pc auto detected to everything low so i played that from the first half of the demo. I then put everything on mid and it looked and ran fine. I have to say the gameplay didnt really inspire me too much and i found doing cool things like chucking an explosive drum into the back of the pickup too fiddly to accomplish. The ai seemed fine on medium. Cut scenes arent really my deal but they were well animated and the voice acting was pretty good, except for the 'english' guy.
I'll give it a run through fully on medium and on hard mode, as well as checking out the editor, tomorrow.