You are a little too late. Mobster Kingpin is safely tucked away in his fort. He is quite obviously impervious to all physical attacks in there. You'll have to find another way to get at him.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.
