Kudos for attempting to build a rhythm game. They can be very hard to tune and effectively pull off.
The screenshot for the game really got my hyped for the graphics in the game. The background looks really amazing. I was less hyped when I saw the really blocky and plain characters against the lush background. It would be nice to see a version of this with animated characters, or cool shape shader effects.
The gameplay is a fun idea, but it feels a bit clunky. It's pretty hard to figure out how to effectively use the tools at your disposal, and the timing between when your character moves and when the enemies move doesn't quite feel like they line up with the rhythm correctly.
Including a level editor in the game is really neat, and very rare from what I have seen in game jams.