Warmonger

 is a challenge in Risk of Rain 2. It is completed by activating 3 Shrines of Combat in a single stage and defeating all the monsters they spawn.

Tips

 * Abyssal Depths commonly spawns a lot of Shrines of Combat.
 * Turning on the Artifact of Sacrifice and Artifact of Command will disable the spawns of Chests, scrappers, Shrines of Chance, and 3D printers, allowing Shrines of Combat to spawn more frequently.