Guardians can earn the Triumph At the Behest of the Empress in Destiny 2's Season of the Haunted by defeating both Au'gur, Devoted of Calus, and Jai'ek, Supplicant of Calus. They are elite Nightmare enemies that can be fought on the Derelict Leviathan. The Triumph needs to be completed as part of the seasonal Reaper title. The in-game description for the achievement reads, "On the Derelict Leviathan, defeat a troublesome Loyalist Commander." Au'gur, Devoted of Calus, and Jai'ek, Supplicant of Calus, spawn together in the Royal Pools and are part of a Public Event.
Players can reach this area by traveling North from the Castellum Landing Zone and taking a left turn at the third unlit brazier. The entrance is between two ornate pillars and under a golden statue head of Emperor Calus. Besides At the Behest of the Empress, players can also complete Destiny 2's Ritual Under Shadow Triumph in the Royal Pools. There is another path through the Pleasure Gardens, but the Castellum route is closer to the target. The Public Event can be started once players see a message above their abilities: "Empress Caitl offers support against an approachable threat."
Related: How to Complete the Ritual Under Shadow Triumph in Destiny 2
Guardians need to stay vigilant because the mission is easy to miss. The Public Event does not occur often and is usually started immediately by other players. Once completed, it could take hours to start again. While waiting, there are plenty of other events to complete in the Royal Pools, such as clearing out the Haunted Alcoves. Alternatively, players can reload the instance, granting more chances to find the mission. This can be done by running to the Castellum and returning to the Royal Pools. Near the main
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