Master Digler:
You can obtain the amulet by defeating Halisha , who is located within the four great cemeteries. You must form a party to enter.
If that proves too difficult, defeat the followers of Halisha at the Memorials of the Lords. By doing so, you can earn "tickets." Once you have acquired over 700
tickets, Halisha himself will appear. By the way, the creatures you must face are the Grave Scarab, Scavenger Scarab, Grave Ant, Scavenger Ant, Shrine Knight and Stander.