Huge thank you to Le and JSlayerXero for helping optimize this kill together with me.
Le: / @le9602
JSlayerXero: / jslayerxero
Music used was the final boss theme for Xenoblade Chronicles, its name is a spoiler for that game so check it at your own risk: • Xenoblade Chronicles O...
Firstly, you need to have killed Gigalith once before on any difficulty and then leave and come back, which will halve his max health to let a single Glitch summon kill in one hit given the 10% RNG. This is the only bit of RNG in the entire kill, once you get this the rest is guaranteed. Due to a bug, the death doomsday tries to use a value from summons for its damage when killed by a summon, which makes it deal almost no damage which lets us not have to deal with it through auto-revive or morale.
Viking Monolith is used first because the SP given by Gigalith is enough to refund it for another Viking Monolith afterwards. You also need all Fakemon and RAM Chip to have enough SP for all the Viking Monoliths used. Debuffs and Stagger are enough to have an unbuffed Ragnarok kill the minions, which gives enough SP for a third Viking Monolith and buffs NoLegs' attack and gives Brave.
After doing so, you switch to have Natalie on the field and use Sharpen to extend the remaining Stagger out for more than enough attacks to get the kill. Sharpen doesn't have to be on Anna, and in fact she's not necessary for the kill, but leaving out any characters when they can be used at all is wrong and bad and if you do that you should feel bad.
Next is to enchant and curse at the same time, with Natalie's gear setup both are guaranteed even with the 50% curse resistance, and then you simply use Seven Swords twice with a Chili because it is the strongest limit in the game, killing both waves of the final boss in a single turn.
------------------------------------------------
The Kupo Games website, for stuff about EBF: kupogames.com/
The EBF Discord, you should join: / discord