Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - Bugs & Technical Problems A Sheep in Wolf's Clothing Achievement

I received the sheep in wolf's clothing achievement, that is freeing the elven seer without fighting the Lone Wolves, even though I killed every one of them. Much earlier, I had entered the sawmill from the sneaky side route that bypasses the trapped area out front, and I killed everyone except Roost and gang upstairs (I didn't see the stairs). Later, after receiving both Ifan and Sebille's quest objectives to find Roost and finding the elf encampment where they ask you to free their captive scion, I reexamined the mill and found the stairs. A fight immediately ensued, and after said fight I got the achievement.

Edit: Later, Sebille references Roost's dialogue to her, which I didn't get because of the immediate fight. I don't know if that dialogue was supposed to trigger in the fight, or if it was supposed to be a proper text box scene, but it didn't happen either way.