I've done pretty much everything except the no-hit stars (and the dummy), but if I'm going to do that I'd like to request a possible "Instant/Auto Retry" option? Mainly to be used in concert with 1-HP Mode.
Basically just something to skip the long soul-shattering animation, and all the load in to the game-over screen before we're allowed to hit the Retry button, which in total takes about 10 seconds total to get through between attempts.
Unless that's already an option and I'm just blind