Save for hell ending. Be forewarned, it is a grindfest and is extremely disturbing. Piss and prolapse galore. I don't know how people get off to this shit, but you do you.
Endings are controlled by a mix of good/evil/lust. For hell ending, in addition to lust level 3, you needed to have picked "wait until night" and slept with the assassination target as a child. A lot of people don't go this route because just it's sad, and it makes Nora a crazed slut which is just boring as fuck since the entire corruption aspect is skipped. I recommend killing him via sleeping pills and just playing the hell ending via this save.