At the top of the main spire, the codex can be found easily at the location on the map above. Make sure to grab it before exiting the level. DOOM_ The Dark Ages_20250521191815 ...

Follow along and reveal every gold piece, ruby, codex, demonic essence upgrade, weapon skin, toy, and secret area.Don’t miss the gold, secret areas and upgrades in Chapter 14, Spire of Nerathul.

Chapter 14 of Doom: The Dark Ages Spire of Nerathul is a completionist’s treasure trove. The level is packed with 23 collectibles, including 11 secrets, 359 gold, and 3 mission challenges.