This is a really fun game! Amazing work! The visuals and the music work together really well, and the box mechanic forced me to take risks, which made it really exciting.
I struggled with the controls a little in the beginning, shooting works best when the button is held constantly, but that is a little tiring, so maybe an autoshoot option would have been nice (or the rhythm sync script could have an exception if you click and don’t hold). The dash also felt a little inconsistent, but that might just be because I am not that good at the game.
I really liked how you introduced the new enemies always with an extra health restore, so that I could get to know the attack pattern without losing my health!
Overall, this is easily one of the most polished and fun games in the jam, well done you two!