The Discerptor title can be earned by completing all of the Duality dungeon triumphs in Destiny 2 with a full fireteam and solo.
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Discerptor is one of the titles available in Destiny 2, but Guardians must have access to The Witch Queen expansion or have a Dungeon Key to unlock it.
This title is connected to the dungeon of Duality, an event introduced in Season of the Haunted that tasked the Guardians with delving deep into Calus's mind.
Dungeon Duality is only available to owners of The Witch Queen expansion or those who have obtained the Dungeon Key.
To unlock the Discerptor title, players must obtain all the triumphs for the Duality dungeon in Destiny 2.
Triumphs vary in difficulty, but the title itself requires players to complete Dualities multiple times.
Fortunately, Guardians receive rewards for each encounter they complete, allowing each boss to receive rewards of the same nature.
All five duality triumphs must be completed by a full team, with at least one of those five teams being part of the same clan.