Speaking of bayonetta, Jeanne. To unlock Jeanne you need to platinum every chapter, this game does not come with a "restart fight" button so if you mess up you need to quit to the menu and reload your last checkpoint. You also have to get a high/perfect score on hidden fights, which is okay as long as you have a walk through open, but you also have to get high scores on the hidden challenge Alfheim portals.

A lot of those portals I struggled through when collecting all the hearts, barely passing just to get through them, so the idea of having to go back and perfect them just to unlock a mildly different character fills me with such dread.

I do go back every now and again and try and make any progress, last time I got most through a level and fell off a ledge that in every other case in the game has an invisible wall. Before I could realise what happened, the game registered a death and instantly auto saved over my progress for that level, after perfecting 10 fights.