80th Cloister

[GypsyElder]

I was wondering if someone could lend me a helping hand on defeating the fiend on the 80th floor of the Via Infinico. He kicks my ass every time and all of my characters are like level 90 at least. I'm trying to hurry up and finnish this torture game finally. I think I have 90% done and i'm probably gonna have to play it through again because I have no clue what I'm missing.

Also do you get 100% before beating the final boss or does the boss and last chapter count as a percent?

Please tell me this is the last floor......(!!!)

what do you get?