Created an account to say how great your game is! Just finished the prototype and it was amazing. Celeste with a bit more floaty jump, but tighter than Super Meat Boy. I really like it, and though a bit simpler than those two games, I would put it on the same level fun and control-wise as those two.
If I had to criticise something, I'd say I found the momentum you gain from the moving blocks unintuitive. I only figured out after I finished almost all the puzzles using sheer trial-and-error in that section that you have to let go very late to gain the maximum speed boost.