That Man, Zangetsu Trophy in Bloodstained: Curse of the Moon

This ending is best done by sacrificing Miriam and Alfred then ignoring Gebel, or some combination thereof, as long as you RECRUIT NO ALLIES. You need to leave at least one character alive, but you don’t want any allies recruited. Sacrificing the rest will give you access to some of the Soul Arts - the Blood Moon double jump and Crescent Moon attack might be easiest to make use of.

Remember that when you beat the last boss, get to the center and hold to charge then release when fully charged to finish her off.