The fighting feels really good and leveling up is satisfying. The art in the menu looks great, though in the game itself it's a bit simple in contrast to the slashing animation. It could use a bit more enemy variety and the enemies can stun lock you if multiple shots hit you one after the other. The upgrades are a bit expensive, though with more content they should fit nicely.
This is probably one of the better games I have played yet in this game jam. I think I reached level 13.