OK, my group took that challenge again. I remember on my first run through of DB I had to move the slider to Novice and then I barely defeated him. This time I was better prepped having both Serena (my constant companion) and I had Conjuration run to 100 so I could gen 2 DL's. I figured my army of 4 would be better than my previous group of me and a fire atronach.

Even with this bunch, I could defeat him at Expert at the best. I had no shot at Master level and I didn't even consider Legendary. Has anybody beaten this guy at Master or Legendary? I won't lay claim to being the best player (far from it) but I"m not terrible and I figure this bunch fighting on my side can take anything. I mean, even with Serena sitting it out, me and the two DL's whipped Miraak rather handily on Legendary.

But Karstaag? That clown is tough.

I had a hard enough time beating him on novice lol.

A Mage can defeat Karstaag very easily, a Sneak may be able to use a similiar exploit. Karstaag does not have a Ranged Attack, and Terrain can be exploited. He can even be taken down without using Terrain by a Mage, but Potions and not getting too close are required. No cheats, No Exploits

Surviving activating Him is tougher than defeating Him, for a Pyromancer.

He hardly needs a ranged attack because he's so fast. That was my problem on my first run through DB. He'd knock off the atronach and then I'd be stomped to death thrown about like he shouted me across the space.

The key this time I always had him busy with one or another of my group. I'd go up behind him and whack for a while until he turned and then I fled to gen up another DL.

I'm an archer / one hand with strong conjuration but no more in magic. I haven't any idea how a mage can beat this guy - especially if the mage is unarmored. I'd think K would one shot him every time.

He is weak against Fire, and Fire continues to burn an Opponent after being cast. He often will one shot a Mage, but He can be kept at enough of a distance between attacks for a Mage to hurt Him, the Ice Wraiths can be dealt with by AOE damage from a Weapon like the Eye of Melka.

I do find it funny how tough it is defeating Him with an Archer or a Warrior, but most of My Destruction Mages can take Him very easily if They survive the Summoning Event.

Fixed, Summons get smashed quickly.