Vengeful Aatxe/Zaishen Quest

Summary

 * Kill a Vengeful Aatxe in the Underworld.
 * *BONUS* Kill a Vengeful Aatxe in Hard Mode.

Dialogue
Kill a Vengeful Aatxe in the Underworld.
 * Accept: "I can do that!"
 * Reject: "No, I'm way too busy today."