Dark Knight Mordred:
Hmm... So, you want to be a Hell Knight, eh? I'm glad you came! Well, you'll have to prove yourself by completing a mission! Have you heard of a Dark Avenger named Waldstein? He was sent out some time ago in pursuit of the Death Lords, and hasn't been heard from since. Please find out what happened to him! It's been rumored that he actually joined the Death Lords! Our guild is under a lot of pressure to deal with this matter, one way or the other. Will you investigate this for us?
There have been reports that Waldstein was seen in the vicinity of the Tablet of Vision. You may need to undertake the Pilgrimage of the Tablet of Vision if you're going to find him...
"What is the Pilgrimage of the Tablet of Vision?"