Cool game! The game feel more than anything is great. It's super smooth and feels very responsive. The whole rock-and-roll tone is also really awesome and I appreciate how it's consistent across the gameplay, UI, and audio.
I imagine you were crunched on time, because a lot of the gameplay seems unfinished. Unless I missed something, it seems like it's impossible to lose on levels one and two. The final boss battle is also not much of a challenge, although it is cool. Semi-unrelated, but the levels are in three separate files which results in a huge total download size of ~750 mb.
Anyway, it's impressive that you managed to make this in not only the jam time but in a new engine! It'd be cool if you continued this and it's a pretty nice foundation for a complete game.