Yes, you have to fight the dwarf captain.

You probably just didn't understand the wizards. They didn't say you don't fight him, just not *head on*. Perhaps there's some other way?

I think there's also an achievement for fighting him head on, too. It's bugged for me though.

Okay. I don't know what that means, so I just kill him normally.

Teleport behind him (nothing personal kid) or digg through the walls.