This was really fun, each boss had a good theme and interesting attacks and mechanics. I played on advanced and it was a pretty nice difficulty. I like the use of the theme a lot and that it can be used defensively and offensively. The divebomb from above after turning to stone was fun to do on the bosses. The art is great and so are the effects for the bosses and their attacks, I think if you added more to the background it'd make the level look a bit more interesting. It'd be nice if it had controller support, I kinda struggle with platformers on keyboard once they have more than 2 buttons. Great job on this I really enjoyed it!