Korshek the Immolated/Zaishen Quest

Summary

 * Kill Korshek the Immolated in the Forum Highlands.
 * *BONUS* Kill Korshek the Immolated in Hard Mode.

Dialogue
Kill Korshek the Immolated in the Forum Highlands.
 * Accept: "I can do that!"
 * Reject: "No, I'm way too busy today."