Ah... well, maybe that's on me. I never really understood what it's gimmick was?
I got it down to between 100-200 hp, and it did get some sort of "death spell" moment where it was finally defeated. I imagine that was the gimmick, but it flew over my head... I was on track to defeat it with pure damage though, my 3-member team was doing fine.
Well, you know how it does this move that applies a stacking "guilt" debuff to everyone (including the enemies)? If it ever reaches 10 stacks on anyone, they die at the end of the turn, and you can transfer stacks to others by attacking or supporting them, so you'd have to try and ensure none of your party members accumulate too much guilt while stacking it on the enemy.
Gotta say though, it's pretty impressive you made it that far. Perhaps I should make an achievement for beating it with pure damage...
Oh, I see! My strategy largely revolved around action denial... I could perpetually keep the lightning stun debuff on it, and occasionally sleep if I needed a breather. Because of that, the stacks never got too high on anyone, and I didn't notice the transfer effect... though I guess it did finally get him in the end!
