That opened him up to Lohse's incredibly powerful polymorph skill Forced Exchange, which swaps HP values with an enemy. The second time, she wailed on him with her hammer like King Kong swinging a redwood, crushing all of his armor in a few hits. The first time, Adramahlikh murdered Lohse and we'd barely touched him five turns into the fight. I changed Lohse's armor to make her more vulnerable but bump her crit chance up to more than 50 percent, for good measure. Living on the Edge ensured her health couldn't drop below 1 HP for two turns, and we comboed that with Death Wish, which gives a damage buff for every percent of HP missing. Lohse entered the battle with about 20 percent HP, hopped up on a strength potion, hasted and clear-minded, spells that gave her more action points and yet more strength. Instead of killing her, we did the next best thing: we beat her up, then buffed the shit out of her. But it was a tough fight, so we wanted Lohse's damage output for the first couple turns. He couldn't target her if she wasn't in battle.
The key to saving Lohse from Adramahlikh's possession was to make sure she was dead already. If you haven't finished Divinity: Original Sin 2 and intend to, you've been warned!
Spoiler warning: Full-on spoilers from this point forward. But I wasn't ready for what would happen when we finally faced down my demon. I'd been stacking constitution until I was built like a brick wall, and could crit for almost 3,000 damage with a two-handed hammer. At this point, it was pretty rare for me to die in battle. And I was Lohse, the traveling minstrel who just happened to be possessed by an incredibly powerful demon. There was Beast, the dwarven pirate who maxed out persuasion to sweet talk our party through sticky situations. He got us in a lot of fights by pickpocketing people who didn't like getting their shit stolen. There was Fane, the undead wizard and thief. We each controlled a character, selected from Original Sin 2's presets. Almost four months later, with nearly 100 hours of game time behind me, my co-op buddies and I had nearly finished this insanely long, ambitious RPG.