I like the visuals of the game, and the core idea of losing controls every time you run out of health is interesting (and akin to my own game). Still, I feel like just the loss of a button is not interesting enough, as it creates a negative feedback loop that just leads you to fail faster next time, instead of forcing you to adapt your playstyle to the new limitation. So maybe consider giving the player something in return for the lost control? I am bad with bullet hell games, though, so take that advice with a grain of salt. :D