Obtained: Automatically after completing The Common Thread main goal and is tied to A Herculean Task
Objective: Find the Egyptian plaque
Ask Aurelia about Khabash
Speak with Aurelia in the tavern about Khabash to learn that he is with Georgius. Also, you can head up the stairs behind the tavern and take a left through the first doorway heading through the next doorway to find a Note from Khabash under the bed. Speak with Georgius in the bazaar to be sent to the shrine of Demeter (right of the bathhouse). Head behind the Greek Statue of a Woman on the right to find a small doorway. Crouch through it and follow the pathway to the end to reach a large open cavern with a Stranger sitting in it.
Ask the old man if he’s seen Khabash
Speak with the Stranger in the hidden underground cavern in the shrine to the right of the bathhouse behind the Greek Statue of a Woman. After asking him about Khabash, he’ll give you the Key to the Catacombs and tells you to chase after him, warning that he will be aggressive. Speaking with the old man first will cancel out the “Ask Aurelia about Khabash” objective.
Enter the catacombs
Enter the catacombs on the lower level in the cavern behind the Stranger/Hermit Philosopher.
Search the tunnels for Khabash
Follow the tunnels until you reach the end to find a Stranger standing before a hole in the ground. Speak with him to learn that his name is Khabash and tell him that you’re looking for the plaque because you want to return it to the obelisk. He’ll give you the Egyptian Plaque, which will resolve this lead.