History of 10. THE DISCOVERY

Overview

This is chapter 10 of 13 in The Liar, a lore book added in Season of the Worthy that tells the story of Felwinter as a wanderer, Warlord and Iron Lord. The triumph has no in-game description; it is a lore record.

How to unlock

1. Obtain the Exotic shotgun Felwinter's Lie (the Season of the Worthy quest "The Lie": complete Seraph Tower public events, scan scrap piles in "A Warmind's Secrets", earn shotgun kills, then visit the Lunar Seraph Bunker).
2. Get kills with Felwinter's Lie. Lore entries unlock as you accumulate kills, in chapter order; the sources I could open do not give exact per-chapter kill counts.
3. Open the book from the Triumphs/Lore tab to read this entry.

Chapter summary

Felspring decrypts records showing SIDDHARTHA GOLEM was an Exo AI that went rogue around the time she found Felwinter, strongly suggesting he is that AI or closely tied to it. This is the secret the pair later keep hidden.

Notes

Sources agree the book is tied to Felwinter's Lie and Season of the Worthy; the Shacknews guide predates later changes, so unlock details may have been adjusted since.