Nightmare Beaten.
Set Up:
Yuna: Valefor R3, Shiva R5, Summoner's Bond
Eiko: Bahamut R2, Ultros R3, Devotion
Terra: Ramuh R5, Maduin R3, Blood of the Summoners
Tyro: Phantasm R3, Ixion R3, Mako's Might
Arc: Shellga R2, Ifrit R5, Dr. Mog's Teachings
RW: Mighty Guard
First runs had Eiko w/ Curaja R5, but I wasn't doing enough damage overall, and Arc was underleveled. So I egged him up, MC2'd him, and honed Ultros up by buying some GSOs and sacrificing a few MSOs (Bahamut R3 is a long way off regardless; not going to be feasible until next Summon Orb fest at the least earliest), and went back. I could have replaced Eiko w/ Aerith since Eiko was stuck at level 65, but she could use the Fairy Flute+, so i figured I'd try one more time with her; 1 Stamina fight means open to experimentation afterall.
Anyway, strategy was Eiko goes all out with Ultros early on, Tyro SG's then Phantasms a bit, Terra and Yuna sneak in some Shiva/Ramuh for early damage and gauge building. Survive Giga Flare, do the elemental thing; during this phase, it's mostly timing, but base don how things go, Yuna might toss Shiva in his 2nd Ifrit phase, Terra would throw Ramuh depending on if he had level 2 orb or not (could not get the alleged Level 3 Orb), Tyro sneaks in a Phantasm if possible, etc. Terra also throws in a Magitek Missile since it's classified as NAT so doesn't break conditions, and still does 7500 to him which is not much worse than Valduin here.
Phase 3, Tyro throws Ixion, Yuna claims she can fly as she summons her laser chicken, Terra tells her father Neo Bahamut is bulling her, and Eiko decides to be ironic with Bahamut; Arc gets whatever Ifrit shots he has left in, but also uses his Medica because mitigation, etc.
Fight ends with Eiko dead, but she already used all her charges anyway so mostly there for the extra Medica, 2 medals lost on damage, and we're good.
That said, new info dropped about events in Japan:
Atomos is the new Nightmare fight, for a Celerity one apparently. Something like 2 hits, hastes user, and damage increases if user is under Hast. Could be interesting.
Squall OSB, whatever, we already knew that was coming
FF11 event dropping soon apparently, giving us Curilla and Ayame. Apparently the former is a Paladin and the latter is our first female Samurai. Not who anyone expected actually, so most are speculating it's based around how those two represent San'Oria and Bastok, the other two Major Cities in the series, with Windhurst being represented by Shantotto. Yeah, similar to FF14 where they went Y'shotla for Limsa Lominsa, Thancred for Ul'dah, and Papalymo/Yda for Gridania, so I guess there's a precedent. Given how we have only 3 FF11 PCs total after these two, I can't imagine them having 2 full banners, so i suspect a repeat of the FFT event where it's more a mini-event.
I guess it's nice to see an actual FF11 event for once. They have been doing whatever they could to sidestep it afterall, putting Shantotto in as a DU PC, and then giving us her MCs and Soul Break in a Dissidia event, though I guess it's because unlike FF14, FF11 isn't quite as easy to frame things around given it's less structured nature?
Oh, also speculated that FF11 is getting an event to give Multiplayer Beta players a few more options for synergy.