Gilgamesh / Enkidou was a really fun fight that would have been miserable without Zack's SSB. Hastega, man.
Phase one is kinda boring, Gilgamesh attacks and has Death Claw which hits 3x but has a pretty low chance of proccing its Paralysis so is only really threatening if they all target the same character. Phase 3, after you kill off Enkidou, Gilgamesh uses a really weak (by 凶 standards) Zantetsuken every round that isn't really threatening as long as you keep Power Breakdown and Protectga up.
Phase 2 was absolutely brutal, though. Gilgamesh and Enkidou's movesets in this phase just mesh so well. Gilgamesh gets Missile, 75% current HP, and 1000 Needles, which if used one right after the other on the same character... isn't enough to kill off a character... UNLESS Enkidou MT Aerogas! Which he does. Often. When he's not doing that, he's Berserking someone, in my case usually Gilgamesh, who had all my MT, or in one notable instance, Mog, JUST as Sun Bath was about to go off. Mog also had my Esuna, so I was kinda fucked for damage for the last half of the fight (surprisingly, still only lost 3 medals, so hey). The Status, the gravity-set damage combo, the fact that you NEED Wall up here otherwise Aeroga deals 4k+ damage unbroken... Yeah, it was a hell of a fight. I do think I could have done it without Hastega, but it would have taken way more S/Ls to not get status-fucked, and I would have had to do a LOT of trickery with my Turn Cancel SBs. As it is though, pretty fun fight, and I have a feeling that the game is good again now that I have Hastega.
Hastega hastega hastega. Hastega? Hastega.