Nice concept, I like how different levels have different abilities, that needs to be used to finish that specific level. Overal decent platform game. More challenging levels (maybe with combination of abilities) could be nice. Sound effects were mostly improving upon game experience. And also love the monochromatic pixel graphics style (maybe "next level" button could be same style as well).
What I think could be improved is background music, where the cut between end of one loop and another loop begining is clearly audible and for me a little annoying, when hearing it so often (since the loop is quite short). And another big thing is some means to exit the game at the last level. When I see "Finish" screen, there is no way to exit other than kill it thorugh taskbar/process manager, which could be less convenient for casual non-tech players.