He just stays there? I did not know of that trick.
I always find a room with a grate and an unblocked door. I run in, close the door in his face, and shoot at him through the grate.
That's how I found out - running headlong down a corridor, desperately searching for an unblocked door. Upon failing to find a door I intended on escaping down to the next level, when I noticed the idiot was stuck! I'm surprised a patch didn't that exploit.
Gharbad the Weak is actually an interesting quest for me. I liked that you could have dialogue with someone as significant as he was. It didn't progress the story in any way, but it did give some insight into the minds of the Goat Men.
Yes, it was a good quest - in fact, I can't think of a Diablo quest that I didnt enjoy. The Butcher was the only one I struggled against. In my second game I sort of cheated against him... he has a problem navigating around the stairways that lead down to the next level and I found I could trap him on one side and shoot the hell out of him from the other side (I was the Rogue).
Since then I have resisted the temptation of using such cheap tactics.
I dislike that they didnt incorporate all that into the game though. So basically you have to read the manual lol assuming you want to know about the story
Yeah, if you play through the game without reading the manual first (like I did the first time round), quests like the Lachdanan one have as little meaning as the insignificant side quests (such as Gharbad). However when you read Librarius ex Horadrim, you realise that Lachdanan is a significant character who has played an important partin the story.