Impressive demo. I wasn't sure at first. I had to get used to the camera angles at first, but once I got into it, it was really good. I especially liked the music and sound effects. When I set the fuse and the music started... shiver. Or in the second VHS video sequence with the screams in the prison area. Really, really good.
The door animation was a bit too long for me, though. And the cursor in the main menu is hard to find. :D
I'll definitely play the full version. Stay tuned.