First thing that I noticed: The music slaps! Great job on the music.
Would love to be able to see what the controls are from the start, even if it's just 3 buttons you can press. Also, the mechanic at the last level is, in my opinion, poorly explained and very hard to pull off. Maybe you took some inspiration from another game, which is fine, but clearly explain to the player how to perform this action.
I also just noticed while I was writing this that it's the same level but with blocks missing each time, really interesting.