You could possibly still dimish its hp via anomaly, but if you fail to do so before all are dead, thats it, you cant also ressurect enemy creatures (for some reason idk i think its not right) so sorta stuck in an easy otherwise sigil. Since you cannot damage it by attacks/spells/non attack-spell damage. Funny,*** only burn seem to do damage***. No mana bomb
So it took me quite long since ive tried all my arsenal only burn did damage. Weak + vulnerable made if faster since i have Zod rune. Didnt have poison/bleed stuff. Guess if map had immune to debuffs things would go sad. Like unbeatable even in theory.
Please let us at least allow to ressurect/cast breath of life on enemies
On the other hand that combat was more challenging that any battle that i had so far and now certainly made me to shuffle my gems selection a bit and to give some chaos perks that were ambivalent a new look