It is located in the section of the structure requiring Blue Access. This codex is located on the bottom level of the UAC structure near the starting point. UAC Facility (Intact) – Get the Seraphim’s Key
Locating all the secret encounters will reward you with the Hypersonic trophy! You will need to collect the codex pages to earn the Required Reading trophy and the Support Runes for the Lucky Charm Bracelet trophy.
Below are the collectibles that can be found during the UAC Atlantica Facility campaign in Doom Eternal: The Ancient Gods Part 1.
