This is a super unique take on the Boss Rush jam which I really admire! The art was cool and stylized and I love how you incorporated the theme more into the writing than the gameplay which I believe is a fair way to implement it.
I wasn't sure if I misunderstood a lot of things, but I felt that I didn't know what most of the mechanics did other than charge to increase your RPM and breakthrough to do big damage when the number looks high enough lol. So it was a little hard to think of much strategy in this game.
That being said, I really loved the worldbuilding in this game and I think the way you implemented your take on the spin theme was pretty unique!