Yeah According to steam the game needs 20GB of free Hard Drive space - gonna have to uninstall a few games this end then....
Having replayed the demo again, once you get into that second mission where it isn't scripted the game really does come alive. I had both floaters completely flank me from the rear (no sniggering at the back there please) - so it was good to see some aliens using their "special" abilities. That caused me no end of problems, and although I didn't lose a soldier, but 3 of them got badly injured. I assume that's because I was playing on easy though, on "classic" difficultly I would expect to have seen them all torn to shreds.
The camera control isn't the best but as I have said before, I reckon the controls being displayed on some of the press preview build vids looks a lot smoother and more intuitive. Hear's hoping anyway..
The main problem with the demo is that it is very restrictive in what it will and won't let you do. I can see the possibilities though, and I am really looking forward to the release date now. Clearly I'm going to spending what little gaming time I have on this game for the rest of this year, and probably well into the start of next.
The only other thing to say is that if you are looking for a more "classic" XCOM experience, then go and pre-order Xenonauts at http://www.xenonauts.com/
because that's the closest I've seen to someone replicating the original so far. OK I'm not sold on the over complicated air combat they've added, but the cold war feel from the 1970s really gives it a totally different atmosphere. The one issue I always had with XCOM, and the new one, is that although you are outgunned and outnumbered at the start, it's always clear you are still sending in the "best of the best" with what earth has to offer to combat the situation . In Xenonauts, playing with 1970's military technology it really really adds to the ideal that you are woefully under-prepared and under-equipped for what is coming. Makes the game a lot more intense experience for me.