Neat game. I had trouble noticing when / where power-ups had spawned, some kind of animation on the power-ups themselves or just a temporary visual effect of some kind when they spawned would be nice. Cool concept, bullet hell but you slowly get worse at dodging was surprisingly fun! Boss fight was pretty fun, I think if instead of the whole arena being a shrink zone, you could have had specific areas be shrink zones. Then boss attacks would move you out of it, and you'd need to find your way back into them. Overall though, nice work!