Finished this tonight and the soundtrack for those final few levels was dynamite. In a perfect world, I wouldn't have any other games waiting and I'd jump straight back in to find the secret rooms and to try the other difficulties. But I have Street Fighter 6 in the wings so a second play through might have to wait.
Strange that finishing on hard didn't unlock the normal difficulty achievement so I'll have to go through in "easy" mode as well
Fantastic game, makes me wish for a Lollipop Chainsaw remaster as they had similar vibes.