History of Crown of Sorrow (triumph)

Crown of Sorrow (triumph) is a 30-point Season of Opulence triumph: earn points by completing encounters in the Crown of Sorrow raid while using Calus-themed armor and weapons obtained from the Menagerie or any Leviathan raid.

How to complete

• Get Calus-themed gear from the Menagerie (and its Chalice of Opulence rewards) or the Leviathan raid, then run Crown of Sorrow wearing as many such pieces as possible, ideally Exotics, as the game text says this is the most efficient.
• A Bungie forum moderator, answering about a different Season of Opulence triumph (the Nightfall Ordeal one), believed a full set plus Leviathan/Menagerie weapons had to be equipped for progress to count. That is not confirmed for this triumph, so equipping a full set is the safe approach.
• Exact per-encounter point values and the seal/title it belongs to were not confirmed from sources I could open.