Really liked the demo and looking forward to it's future release! Feels oldschool, but fresh, like those experimental adventure games, especially with your art style and design (Neverhood comes to mind), which is super cool.
So far the puzzles don't seem to be challenging (which is okay, i'm fine without super complicated puzzles), but i did like the not-so-obvious solution to the cockroach puzzle, so i hope there will be more creative solutions like this in the full game.
Good luck and i hope you'll reach your goal!