It's so full of life! It's fun, difficult, and very unique! Amazing job, absolutely loved playing this!
The only criticisms I have are on the Bonzi Buddy boss fight. I feel like the bullet hell parts are really difficult for no particular reason. Especially the one where he's trying to crush you with also spitting out balls-full-of-bullets PLUS the pop-ups! Also the part after it. My recommendation would to slow down the rate at which he fires the balls-full-of-bullets, and also the rate on which the pop-ups spawn on the section after. It's barely possible to react quick enough. It also overwhelms the player to the point of panic when everything happens. It's not very fun. I would appreciate it if you could tweak the difficulty on this section :)