History of 13: Margins Part II

"13: Margins Part II" is entry 13 of 19 in the lore book The Pigeon and the Phoenix, a Season of Dawn lore book about Saint-14 and Osiris and their time together before Osiris's exile. The triumph is completed by unlocking the entry; its in-game description is empty.

How to unlock

1. Start the Corridors of Time activity (it is tied to the Bastion Exotic quest from Season of Dawn).
2. Pick the runes in this order, one per room: Hexagon, Snake, Plus, Hexagon, Snake, Hexagon, Plus.
3. At the end of the pathway the entry drops. Walk forward toward the tomb to be returned to the start, then repeat for the next entry.

The rune sequence comes from a community guide; I could not open the entry text itself, so the story content of "Margins Part II" is not summarized here. Entries are also read in the Lore tab once unlocked.