Oh man, what a beautiful aesthetic! I ran to play as soon as I saw the screenshots.
It's a really fun game! I just wish there was more variety. The most fun part of the game is when opponents start pushing each other and everything descends into chaos. I wouldn't be afraid to add more opponents and add some more interesting behaviors (exploding if hit by something, going into a rage state, etc.).
And the items—almost all of them are either useless, in my opinion, or you forget about them. :) The game would benefit from super bonuses that you have to collect quickly and they're applied immediately.
Good job! I always appreciate developers who can put together something high-quality from a small number of elements.
Whoosh-whoosh, bam! Cool!