Goliath wrote:So my question, Iron Spiral or Deathgaze Barb have best chance on either of those fights?
For Kabraxis respec to Fortress, keep summoning Edyrems near him so he doesn't target you too much, and stay mobile but not too far from him so he doesn't jump you and also if possible try to position yourself behind one of the statues on the sides but still with vision on him, just for a breather and to avoid direct dmg from his Balefire. It takes some time but you can do it.
For Lucion you have to use Dire Charm from the book Duram drops, in the N part of the map, use that spell on Lucion (the one with Mephisto sprite) and he will get an overlay of a small green tornado and essentially be on your side and fighting Malic (the one with Nihlathak sprite), so now he can be damaged by Malic and killed by him, just be sure to reapply the Dire Charm when you see the green tornado disappearing. Also lure Lucion in the open area where Malic is and try to keep the fight in between them there, it's easier to manage and run around avoiding Malic's bolts in a more open space.