Very cool, I love 2d bossfights so I might be a bit biased lol. the graphics were good enough that I wasn't really thinking about them (which is a good thing) and the music was great. voice acting was also peak. Remindeds me of terraria bossfights with the platforms and boss attacks *like the second boss especially reminds me of empress of light*. one tiny thing i would have loved to see added was some feedback when you hit the boss, like either sound or boss flashes color or smth like that, having only the hp bar lower was kind of confusing. also ui kind of cluttered up play space. these are just minor problems i had with the game tho, overall very fun great job :)
also i would have loved more difficulty even if that came in the form of stat changes and not gameplay mechanics.