This was a neat game. The jump height was ridiculous, and it's hard to tell whether I died or not without much of a health bar. It would've been nice if there was some kind of visual indicator that you actually hit the enemy, as it's hard to tell. It would've been nice to see that health bar in the other levels too, and not just the boss fight, which I found quite fun actually.
The graphics were also SUPER small, which is a shame since it means I can't see the designs of the characters very well.
However, it's an interesting prototype that I'd like to see explored more in the future! Nice job!