50th Floor: An Oni Presence - The Oni of the 50th Floor

Quest Overview

A general tip is to save Lucha Oni (Quetzalcoatl) for last due to the severe NP Damage debuff that all party members will gain upon breaking her first HP bar.
Dealing with the other non-break bar enemies first will make the fight much easier.
Her final HP bar is best dealt with using critical damage sources if possible, given NP damage will be very low with the debuff active.

Part 1

Fatal Battle 1/1
Enemies	HP	Lvl
Quetzalcoatl Lucha Oni Upon Break - Harsh Training: Quetzalcoatl grants everyone (both enemies and friendly Servants, including the back row) with the following Permanent and Unremovable effects: Increase NP Generation Rate by 10% (NP Charge +1 each turn for enemies) Reduce NP Damage by 90%	110,652 BreakBar1	60
Quetzalcoatl Lucha Oni	152,146 BreakBar0	60
Beowulf Brawling Oni	70,137	57
Spartacus Rebellious Oni	108,600	90
Fergus mac Roich A Man's Oni	83,181	70