Yeah...played the demo and ummm....I really do not like it. It looks pretty for a DX9 game buuuuut: Controls are sluggish at best, playing as a marine is pointless, and the aliens seem to have a weird lag when they attack. All in all it's a confusing mess.
This game will be in the $20 bin at walmart in a couple of months.
Now, Curse and I were discussing this and apparently this is a 'beta' from something like a year or so ago. The final game better be much better than this. If they want to sell this game then they really need to put out a real demo and not some junk like this.
EDIT: I gave it a second chance and I guess I am just not getting the mechanics of this game. The 'transition' between surfaces as the alien is really bad and not fluid at all. In AVP1 and 2 all you had to do was hold the shift key down and you could crawl anywhere. In this version sometimes it doesn't want you to go from the wall to the ground and vice versa.
I'll give it a third chance when the real game comes out. Until then...they ruined this game for me.