OK, it seems with my l33t skills on FEAR, I completed this on uber-hard within 2 minutes. It is a demo after all, but I expected a little more.
As for gameplay/graphics etc, it feels better. I cannot however put my finger on why. It seems smoother, the guns are much more fun, and the enemies still have their "Im gonna do whatever I fucking want" attitude.
Good game, cannot wait until it comes out as the expansion.
Crossposted like woah.