Very clever take on "Would you come back to this again and again"! I would have loved to have done something similar but I didn't have the time :") I have 2 suggestions that have yet to be mentioned:
- I think the background can be a lot darker (or just a different colour) to let the brighter purple attacks and boss stand out more
- I find the stun after getting hit too punishing, you usually want to help the player recover from being hit instead, such as giving them invincibility frames or clearing away nearly bullets
That being said it is still a fun and challenging boss fight and a smart answer to this round's theme and criteria. Good job!