Wanted: Valis the Rampant

Summary

 * Kill Valis the Rampant in Twin Serpent Lakes
 * *BONUS* Kill Valis the Rampant in Hard Mode

Dialogue

 * "Valis the Rampant's name is spoken with dread among those Krytan merchants who must transit Twin Serpent Lakes. Valis intercepts travelers and confiscates anything that interests him as a "tithe to the Unseen Ones." Those who resist Valis all meet a common fate. It is time to repay Valis the Rampant in currency he understands: cold steel and magic! Those allies of Kryta who eliminate Valis will receive a royal bounty."

If you have already completed The Battle for Lion's Arch:
 * "Relive this classic event from the War in Kryta! Valis the Rampant's name was spoken with dread among Krytan merchants who travelled through Twin Serpent Lakes. Valis intercepted travelers and confiscated anything that interested him as a "tithe to the Unseen Ones." In this utterly historical reenactment, you'll earn a royal bounty by hunting down Valis the Rampant once again and making him pay for his misdeeds!"

Walkthrough
Start from Riverside Province and exit northwest. There will be a group of White Mantle immediately closeby when you appear in Twin Serpent Lakes, which can aggro if you leave them on their own long enough. Head north, following the map provided, defeating any hostiles on the way to Valis. Valis and his group will be atop a hill. Casters can take shelter beside the hill to prevent getting hit by any ranged attacks. A tank can bodyblock any melee foes at the bend of the hill. Defeating Valis and his group requires no other special tactics.

If still having trouble defeating his group, take the lower road and attack from under the nearby bridge. This will cause any melee foes to run far from their healers, while ranged attacks will often miss.