One way might be to put on as much AC and HP as you can and try to kill with double damage shield. Your own DS plus
Kilva's Skin of Flame. Get into a nice corner to mitigate some of the push (silly non ogre druids) and spam heal yourself. If the mob will flee, consider rooting one of his buddies nearby, so that he doesn't run at low health. No idea if you will survive the encounter.