You know you could do stuff like buffing before the fight and such... not that it fixes your item problems, but you could do things like Apotheosis before the fight with some graft skin scrolls ready and adrenaline.
Lay four mines, lay an extra mine, repeat, blow with impale. Still good, even if they have 50 % resistance. You could even set up a small container full of individually placed grenades and use that, too. I think their damage scales with your abilities, if memory serves.
Or teleport them all in, keep them webbed and use smoke grenades until you set up. Easy with four people party than two lone wolves, to be honest.
Last edited by Yasen; 10/03/18 08:28 PM.