[Radek]

Kangaxx, part 1: The Sewers. The sarcophagus at the place where you have spoken with the former leader of the Unseeing Eye Cult. You will need Gaal's Key.
Kangaxx, part 2: The Bridge. A house with a locked and trapped door and a sarcophagus on the lower floor.
Kangaxx, part 3: The Docks. A house with a locked and trapped door and a sarcophagus on the lower floor.
It does not matter where you begin. Kangaxx, part 3 will send you for parts 1 and 2 but you can come to the part 3 with parts 1 and 2 already in your inventory. Once you give the part 3 parts 1 and 2, a tough battle will start. Be prepared.