The music is awesome and perfectly fits the theme and aesthetics. I would add sound effects to give player feedback about what is happening since it is difficult to tell if you hit an enemy or if you are being hit. Fun overall!
Thanks for the feedback, I kinda just hit burnout in the last few days and couldn't implement everything I wanted. We had some issues during development and thus I could not actually finish the boss room haha! Looking forward to playing your game!