This achievement is gained upon completing all the quests in the Veil of Alaris.

Mercenary of Argath, Bastion of Illdaera
Partisan of Argath, Bastion of Illdaera
Mercenary of the Valley of Lunanyn
Partisan of the Valley of Lunanyn
Mercenary of Sarith, City of Tides
Partisan of Sarith, City of Tides
Mercenary of Rubak Oseka, Temple of the Sea
Partisan of Rubak Oseka, Temple of the Sea
Mercenary of The Beasts' Domain
Partisan of The Beasts' Domain
Mercenary of The Resplendent Temple
Partisan of The Resplendent Temple
Mercenary of The Pillars of Alra
Partisan of The Pillars of Alra
Mercenary of Windsong Sanctuary
Partisan of Windsong Sanctuary
Mercenary of Erillion, City of Bronze
Partisan of Erillion, City of Bronze
Mercenary of Sepulcher of Order
Partisan of Sepulcher of Order