This is a really good game, I found it really fun exploring the world. I also really like it when demos have more to them when you dig deeper instead of going straight for the finish, having an almost completely new world outside the bounds of the normal demo only accessible by this little glitch with the scanner (I wonder if you found the bug while playtesting and decided to add an entire secret level behind that bug)
It did get a bit annoying at points trying to get to certain places but that's just the nature of this sort of thing. I think I managed to rack up a completion rate of 158% but I know I missed alot, including that '?' room and 2 of the Ilivesilives cats.
I'll look forward to the full release and what it has to offer!