So when you take the top path into the shattered sanctum of the goblin camp , you can jump down from a ledge if you are taking the path coming from the right side facing the building. When you land the jump next to the passed out goblins and bugbear you wake up Stimk, who you pass a persuation check. One of these options allows you to give Stimk a drink. This is done via the barter/trade screen. I tried giving him the poison that looks like a healing poison from the blighted village thinking that was what it was for. I tried giving him rum or wine. These both have him say "what did you give me? nothing!" then become hostile.
Has anyone figured out how to give him a drink?
I'd assume Stimk is looking for more booze, maybe a different type than the wine or rum? Although honestly I just killed them all in their sleep after waking them up once.
