Very nice graphics, liked that a lot, the music and SFX are fitting and the game play has a lot spin.
If there is one thing I would like to be added, it would some sort of an boss healthbar or an indicator about the state of the boss.
The boss's HP is displayed in the top left corner, but if you didn't notice it, that's on us. We definitely need to make it more visible. Thanks a lot for your feedback!!