I’ve run several nightmare dungeon without taking damage but the challenge didn’t got completed.
My rogue level is 80 and I’ve equipped “Temerity” + an amulet with caged heart of the Lionheart and Aspect of the Protector. I’ve started a tier 25 nightmare dungeon (Dead Man’s Dredge), popped a healing potion to initialize a barrier from Temerity, which will stay on due to the healing affect from the Lionheart. I’ve completed the dungeon without taking any damage to life but didn’t got the “Challenge Completed”.
I’ve repeated the above process above several times - 4 times at Dead Man’s Dredge and 3 times at Iron Hold.
Am I missing something?