Lucked into an A2 earlier last week (my 4th rainbow and first 5* chainer), and suddenly whole new worlds of possibilities opened up to me. I could finally one-turn Engels! It was heaven, and then I was possessed with a certain audacity.
Could I take on Aigaion?
I'd mostly shunned trials up to this point because they seemed like a lot of work, and I felt pretty under-powered to fight them. But now it seemed possible. Reddit confirmed that it was possible, but I didn't really have a re-raise unit. Nevertheless, A2's raw damage made it seem feasible.
Spent a few days tweaking and researching (took down some earlier trials to get ready), and I ended up going with:
Rikku (w/ Rikku's pouch)
Rikku
Tilith
9S (w/ Pod 153)
A2
Friend A2
-I didn't really have a lot of LB building TMRs for Rikku, but I had seen videos that made it seem that the LB boost from Rikku's Pouch could substitute for it. And if it couldn't I had enough full rezzing to hold out until I could start rolling Hyper Mighty G.
-9S was there to fire imperil, spot 30% damage resistance, bushido Freedom, and throw in some chain support with the Pod. He was dual wielding with Vernard.
-Tilith was there more as a mana battery than a healer, as I would discover as the fight went on, and spot sealed lights when the coast looked clear enough.
-A2 and friend A2 were fire element upped and there to rip machines apart.
Five tries later and I finally did it. The drawback of the body first method is that there's no way to roll Rikku LBs once the body is gone, so it's a race after that. It took a try or two figure out when it was safe to take down the body. I also wiped multiple times because I didn't realize Mighty Hammer was thunder element and AOE chained with 9S. I was real sheepish when I realized that was the case.
But man double A2 was amazing, she just tore that boss to pieces. I don't think I ever perfect chained once, but she still did 20% ish damage to the body per round.