This was a really great game. It's an approach to platforming I haven't seen before, and that's really cool!
The third level was really hard, but a lot of fun. I wish I could have seen more of it my first playthrough, but my solution to it was to just glide across the floor.
The meteor jump level was definitely my favorite, and the health packs were placed perfectly! I had almost no health both times.
I like the art style, too. It's a unique, cute but not too cute look, and I'm impressed you made all the assets yourself. It helps the game have a consistent look and feel. I'm going to play it again as soon as I finish writing this review!