What do we do about the shinto palace stage and the ability you get after beating the game with all four turtles. As of now i left these out in the Any% runs ive done. I would say NG+ category would be after all four turtles have beaten the game. Also standard normal difficulty for everything, no need to get too many categories keep it nice and clean.

Also difficulty it seems easy more damage is given to bosses so i say we stay with that, the run doesnt need to be longer than it already is.

Are passwords for costumes and red damage password or speed password allowed in NG+ along with gembu an infinite stars? Anything goes here in NG+?

Yeah every single password is allowed in NG+