The Stygian Lords/Zaishen Quest

Summary

 * Kill 4 Stygian Lords in the Stygian Veil.
 * *BONUS* Kill 4 Stygian Lords in Hard Mode.

Dialogue
Kill 4 Stygian Lords in the Stygian Veil.
 * Accept: "I can do that!"
 * Reject: "No, I'm way too busy today."