The game is really polished and I didn't encounter real bugs except a few cluncy collisions here and there and horizontal movement being not normalized (faster).
Overall a really neat game with the difficulty ramping up quite a bit after the first level. I like the choice of music, it fits really well.
As suggestions for improvement I would consider adding an option to scale the music volume since it was a bit too loud, maybe lock the later levels until the previous one is finished. And to differentiate the levels without much additional work you could make the carpet a different color.
Great work :)