Very fun game with lovely visuals. The initial control setup is bit confusing for me but I will grant you extra points allowing me to change keybindings to my liking, also I've never ended up using the falling faster key, it seems you had the hold space to make jump higher feature so if I wanted a small jump I simply tapped, but also the character doesn't feel to floaty that I feel the need to fall quicker.
I like the tutorial, the font is pretty small and there is probably to much text which led to me ignoring the text that explained I could heal. Speaking of healing nice feature adding the spin there too, there is a risk to losing a life.
The theme is very well implemented, you have the attack which is you spinning, then you have the wheel of fortune after beating a boss and the healing wheel, you've added spin to every thing you could while also making it make sense, it stays in that steampunk theme of the game.
Love the bosses, specially the final one, having the same gimmick as you and being a not discarded ballerina. But one nitpick of mine is that I'd love to know the health of the boss, my only way of knowing is when the music ramps up speed indicating me that I've entered second phase, but I don't know how much health they have left.
Music is reallly cool, can't really put into words how fitting it is to the setting. On the other hand I feel the game lacks some more sound effects.
Overall, really neat game, it is a blast to play.