Joffs the Mitigator/Zaishen Quest

Summary

 * Kill Joffs the Mitigator in Riven Earth.
 * *BONUS* Kill Joffs the Mitigator in Hard Mode.

Dialogue
Kill Joffs the Mitigator in Riven Earth.
 * Accept: "I can do that!"
 * Reject: "No, I'm way too busy today."