Hey.
I have some feedback about your game.
At the end of the game, the player starts shooting like 5 bullets per 0.2 seconds, making the game VERY laggy. What you could do instead is: make each bullet bigger and make the time between fire longer.
I also wish the player would be faster, but that's probably because I'm biased from making a faster-paced bullet-hell game.
Pretty fun game overall.