Your ui is remarkably clean! a competent execution of a bullet hell, though i would have liked more differentiation between enemy bullets and enemies, as it can be hard at a split second to determine which is which.
I found a glitch where if you just hug a wall enemies spawn outside of it, you can wait until all allowed enemies have spawned out there and then survive as long as you like, though you can still hug the wall to kill them.
I'd be excited to see more from you! your ui work here is really clean i think you should look for programmers to collaborate with, as ai code leaves a bad taste in my mouth, otherwise great job c: