This was certainly an interesting idea. I like the art style, but the spike blocks look like pickups because of that aura around them, so that was confusing on my first run.
I feel like the camera should have been zoomed a bit further out. As it is, I can't tell what's coming up early enough to dodge it. And sometimes the game spawns things too late for me to dodge them. If that was changed, I think your game would be a fun challenge, having to bounce the player character up the tower rather than directly controlling them.
That problem aside, thank you for submitting a unique idea. I'm glad I got to play it.