The Great Northern Wall (mission)/Zaishen Quest

Summary

 * Scout the enemy territory north of the Great Northern Wall and assess the strength of the Charr army.
 * *BONUS* Find and return the four pieces of Kilnn Testibrie's armor to his tomb.
 * *BONUS* Complete the mission in Hard Mode.

Dialogue
Ascalon has received information that Charr General Bonfaaz Burntfur may be planning a massive raid on the Great Northern Wall. Scouts are needed to head north of the wall into Charr territory and evaluate the threat. For Ascalon!
 * Accept: I can do that!
 * Reject: No, I'm way too busy today.