Hi, just finished checking out your game. I can say that I really hate slimes, they slow you down and remove your ability to jump. If you get stuck on one, with multiple enemies nearby, your run is just over, it's really difficult to escape that combo. Also, some more checkpoints would really help balance the game. I found myself jumping past the enemies most of the time, as fighting them is really hard, especially when those big violet spirals are also shooting you constantly. The art is amazing in my opinion, it really fits the style of the game and the animations are really really polished. The sound design is really good too on this one. I found the controls quite well made too, maybe the collisions on some platforms were kinda strange. Sometimes I just bumped my head on one of those and fell off. I think you just need to work a little bit more on the balancing/design part, because all the artistic part is really sublime!
Really a solid game, it has it's weaknesses but they are really easy to fix, it's not that big of a deal I think. With some polishing on the mechanics and interactions in general it could come out a really cool game. A great job for just a game jam. Good luck with it, you deserve it <33333