Unverified. Inside the Great Clock Building, there is a large door you can't open. Ignore it for now. After defeating the Shadowjumper further in but before teleporting back to Arhok, retrace your steps back to the large "locked" door. You should be able to open it now.

Inside the room, there will be an elevator leading to a lower level. The music should change to a slow disco theme. Once you go down there, you should see a brown faced brute (called a Krug in the original Dungeon Siege) dressed in fancy clothing. Talk to him. He will start talking about how annoyed he is about the Shadowjumper then he will thank you for doing away with him. As a gift, he will give you two ridiculously named items (Mac Daddy Headdress and Orb of Chicken(spell).