A very fun game! It's pretty solid, the art is just amazing, and the concept is pretty cool. I loved the bullets that bounce back and that I could stomp on enemies' heads.
The only flaw in my opinion is that the biggest enemy in the game for me was the camera, the type of transition for me is not the problem, but the places it transitioned most of the time it seemed to cut a movement and split it in two screens.
But I still had a lot of fun playing the game and it's really good! Despite what you said about him being short, I thought he was the perfect size for a weekend Game Jam and I don't think he's short! You did a great job, especially for the first time in a Game Jam! Amazing work!