: Finding physical Codex pages hidden throughout levels increases your total score and provides 100% mission completion.
The specific entry for describes the expansion of the Argenta empire using the technology and magic of the Maykrs. A key feature of this lore segment is the reveal of the Argenta's first spaceflight , where they used Maykr "machines and enchantment" to travel across the Empyrean Void to spread the Khan Maykr’s word and eventually discover their many enemies. DOOM.Eternal-CODEX.part3.rar
: Collecting certain Codex entries or completing related challenges can reward players with Sentinel Crystals to upgrade health, armor, or ammo capacity. : Finding physical Codex pages hidden throughout levels
If you are looking for gameplay features related to the Codex system itself: : Collecting certain Codex entries or completing related
: Accessing the Doom Slayer's in-game computer allows you to unlock full versions of original games; for example, entering the code FLYNNTAGGART unlocks DOOM II .
In , the Codex serves as a mobile database that provides lore and technical details on the game's world.