Wanted: Barthimus the Provident

Summary

 * Kill Barthimus the Provident in Cursed Lands.
 * *BONUS* Kill Barthimus the Provident in Hard mode

Dialogue

 * "Barthimus the Provident is a sinister figure who menaces and preys upon innocent Krytans. Those unfortunate enough to encounter Barthimus are often plagued by nightmares... If they survive the experience. This grim agent of the Unseen Ones haunts the Cursed Lands. Queen Salma offers a bounty to any who have the skill and ability to finish off Barthimus."

If you have already completed The Battle for Lion's Arch:
 * "Relive this important event from the War in Kryta! Barthimus the Provident was a sinister figure who menaced and preyed upon innocent Krytans during the reign of the White Mantle. Those unfortunate enough to encounter Barthimus were often plagued by nightmares... if they survived the experience. This grim agent of the Unseen Ones haunted the Cursed Lands, and that is where adventurers cut him down in the name of the Queen. Slay Barthimus the Provident once again in this historical re-creation and earn the royal bounty!"

Walkthrough
Although Barthimus appears closer to Bergen Hot Springs, it is more beneficial to leave from Temple of the Ages, since there are less foes on the way to Barthimus from there, and the party size is 8 instead of 6. Regardless of where you start, make your way to the center of Cursed Lands. Barthimus and his group are in a small clearing beside a hill. His group consists of random White Mantle units, and will often come with one or two healers, which, in addition to Barthimus, make defeating any target require heavy firepower.
 * Approaching from the north puts your party at a greater risk for getting hit with more AoE attacks, such as Barthimus' Ray of Judgment, because your party will be in a narrow passage in the hill. In this situation, a well-timed Pain Inverter quickly followed by a cover hex or two will make quick work of Barthimus.
 * Approaching from the west (via The Black Curtain) gives you more space to move. Be sure to handle the small group of Lynxes to the right before engaging Barthimus (a minion master with Aura of the Lich can make an instant army here). A nearby group of Peacekeepers behind Barthimus' group will also join the fight, so be prepared for a large group.