This boss is heavily overtuned for HC audience. Something like this should have been mythic boss, not HC one... HC should never be single fail = wipe. This is what mythic for. Simple fix would be completely remove dot debuff from failed armageddon soak and boss would be perfect for HC. We are at 100 pulls and kill isn't even close. Goroth Mythic only took half of that and rewards better loot. There's something clearly wrong with KJ difficulty/reward ratio. So far hardest HC boss in wow history.