Thunderhead Keep (mission)/Zaishen Quest

Summary

 * 1) Retake Thunderhead Keep.
 * 2) * BONUS* Light the beacons to draw additional Mursaat forces into Thunderhead Keep.
 * 3) * BONUS* Complete the mission in Hard Mode.

Dialogue
''"King Jalis Ironhammer seeks assistance in retaking Thunderhead Keep from the Stone Summit.
 * Accept: "I can do that!"
 * Reject: "No, I'm way too busy today."