What a cool mechanic!! I'm not much into bullet hell games, but yours made me have lots of fun! Just wished for a play button before every level so I could rest a little, but overall, awesome job! :D
There's a pause button with ESC, but that was implemented way close to the jam's deadline and I don't think I've made a great job at showcasing it. Also, I just noticed that ESC can conflict with the game on fullscreen, so mental note for both of us xD Thanks for the feedback!