Really cool idea. I'm not quite sure about the using your head to move the platform mechanic. I think it's a solid idea, but it felt more like I was moving it because it felt like a bug rather than a puzzle. If the movespeed on the block was faster when hitting it with my head, it would give off the impression that I am meant to do it as a mechanic. In it's current state, it very slowly moves up.
Great game overall