Good submission, I enjoyed playing it and I think it feels and looks really nice.
I like the variety of the cubes, and them different from each other with their mechanics. It adds depth on this regard you nailed it.
The only complaint I'd have is the same as what others wrote it - the difficulty curve seems a bit high, I was too stuck quite a bit on level 1, and even after from time to time it seemed like I had to nail a perfect jump/wall stick to get through.
Besides that, I really liked it, well done :)