How to Obtain a Mercenary To recruit your first mercenary, you must complete the Vessel of Diablo 4 Items Hatred Campaign. As part of the story, you'll be introduced to the Mercenary Den in Nahantu, a new region added with the expansion. Your first mercenary, Raheir, will be unlocked here, and you'll learn about the four mercenaries available in the game. Campaign Requirement:  Once you...