This game has reminded me of why I never play bullethells, I am so bad at tracking things on the screen...
Really well made though even if its a genre I don't usually play. Sound effects are good, art style is perfect for the game and I really like how you've decided to implement the rewind.
For me, I would have preferred a lower res so I could see everything better as I'm getting blind in my older years but that's about the only negatives words I have to say.