Typhon Logs and Dead Drop Locations - Borderlands 3 Wiki Guide - IGN
I have zero clue what happened, spent like 15 whittling his health down to half with a flame Rowan's Call before this (using ASS Revolter, Seeing Dead, and Pearl of Ineffable Knowledge).
Borderlands 3: The Droughts Crew Challenges Guide | Hold To Reset
Borderlands 3: How To Unlock The Secret Vaulthalla Treasure Room | Ye Who Enter Achievement Guide - Gameranx