I love the art style so much, and even though you didn't make the audio, the music you chose fit really well. :)
The idea for the gameplay is great, it's very difficult but that comes with the territory of these types of games, and I suck at normal bullet hell's, let alone versions where you can't control your character haha.
Only real feedback is to add a main menu next time, and maybe a quick screen between levels to give the player a moment to breathe. :) These are big quality of life improvements that can take a game jam game to the next level.
Otherwise great job, keep up the awesome work. :D