Just wow. The art is amazing, the music is great (even if it isn't custom,) controls flawlessly, I honestly don't have much to say about your game. It truly is great! Short, but most definitely sweet! Getting some Celeste vibes with the air dash!
The balance might be a little off (got way more trouble beating level 2 than 3, but maybe it's just that I suck at these types of games,) but I don't expect a perfectly balanced jam game in a single week, especially when other aspects are outstanding!
Amazing work!