As a platformer, it's pretty rough. Movement is weirdly floaty, the camera is horrible, attacking is awkward and between all those issues and the punishing level design it's almost impossible to destroy the speakers without getting hit. I died pretty quickly.
For a first jam, it's not bad, though. The game is functional, and the only real issue is the packaging one that's already been mentioned. The overall feel, visual and sound design are a good fit for this jam.