You can complete this without using any combat skills at all, if you have the stealth skills – though not without causing at least one death in a sneaky, indirect way. You might want some levels in your pacifist skills before starting the mod though. Note that although the quest encourages you to “think like a thief”, you don’t even have to commit any crimes.
Epic, long quest and 100% pacifist completable, even gives bonus rewards for non-lethally completing some of the quests. Unless your definition of pacifism precludes breaking machinery, this quest is actually 100% pacifist completable.
I mean to update this list as I play more mods that I find to be pacifist-friendly. Did all the quests in Skyrim already? Now you’re planning on a pacifist character in Special Edition, and you want some fresh quests from mods, but you don’t know which ones a pacifist can do? Look no further! Based on my pacifist reviews, Icehair is here to compile a list of quest mods that I can recommend for pacifist runs.