The new ToAU mission is a pain in the butt!

S-E was lazy enough to add only one BC fight in the June update, but damn it is tough.

As of now (4 hours after maintenance ended) I'm 0/3 on it.

(SPOILER) For those who wanted to know, the BC fight is against the main yagudo NPC of the ToAU storyline, Gessho.

Have any of you attempted this fight yet and have any strategies to pass on to a desperate PLD? ; ;