Feels good to see some Hi-Fi Rush inspiration, this game felt really fluid and responsive to the beat clicks. Like the previous comment, at first I also didn't realize even the projectiles moved on beat! Such great attention to detail! The enemy AI feels okay, although during the Princess 2nd phase it sometimes looked like she was teleporting to me? (That might be just an animation error, or another on-beat mechanic I didn't understand) The fight was fun overall!
I'm kinda sad there weren't more movement mechanics (I got super excited when the description mentioned Ultrakill), there could even be some cool stuff for timing jumps/dashes on beat. Don't think of that as a complaint, just a suggestion. This game is so beautiful for a 4 day project, it's genuinely hard to say anything bad. Great work by everyone on the team!
P.S. I assume the thing in the top right is an FPS counter. You should probably put a cap on that. It was reaching 600-800 for me and the pc fans were going crazy.