Ok, motivated by Volarmis success i spent a good while changing around the girls, equips and memories to try Maotd's and epicfaillulz's strategy.
With multiple attempts i'm at two clears allready.
It's kinda pathetic, but sometimes works.
Attachment 13558
Pretty much the same idea as Volarmis, but the nukers are in my third squad because Kerria simply can't solo the Sparaxis stage in the long run. If i put more activators she dies because of insufficient debuffs/defense buffs. And i have no debuffers with skill act other than what i'm allready using.
All credit to you guys, Kerria and mama Yarrow.
My nuke squad just took out Laeva by themselves because of a ton of re-acts, Silk Tree is terrifying.