No Grey Coat, so no actually good healing, no corrosion and only having resources to use 1 EGO.
I only tried to corrode on the last turn, cuz if you fail MFE's skill check, it will stagger you and use 3 attacks that inflict 50 karma each, so guaranteed death (and they also roll around 27).
AEDD is so good. I love it. AoE, inflicts paralysis and gloom fragile, small healing when hit, great sin affinity resistances. So good.

Yea I forgot to show my EGO gifts, I was doing this at 2AM.
"Eclipse of the Scarlet Moths" is a pretty good relic for this fight in particular because it can break the MFE's body on turn 2 without attacking it, if you get lucky with the random targeting of course.
"Special Contract" is also good if you're focusing down 1 of the minibosses, like I did on turn 3.
I know I also had "Thorny Path", "Red Order" and "Midwinter Nightmare" which are great sinking gifts specifically for Sunshower, getting +4 offense levels from "Red Order" and more gloom damage from the other 2 is nice. I was missing "Skeleton Crumbs", which's makes sunshower deal +20% more damage and take -20% damage from enemies with sinking. It wouldn't made the fight a LOT easier.
"First-Aid Kit" healed me 55 hp on turn 3.

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