I have to chip in with the others for the praise. The game teaches you the mechanics without words. It guides you just enough after you learn the "throw head" ability that you are not confused, then let's you solve a few new puzzles with it.
I hope the game will 'open up' (become non-linear) in the full version, but of course for the demo/tutorial this was totally fine. I really hope this game gets expanded to a longer/full version.