If you are currently running vanilla Steam version 6.7 or higher, here is why you might want to downgrade to .

: Update 6.66 Rev 2.2 officially removed Denuvo Anti-Tamper from the game. Accessibility Improvements

DOOM Eternal is a first-person shooter game developed by id Software and published by Bethesda Softworks. It serves as the sequel to 2016's DOOM and continues the story of the Doom Slayer as he battles against hordes of demons that have invaded Earth. The Deluxe Edition includes the base game along with extra content such as:

Because a patch that large inevitably introduced minor issues, id Software rolled out several revisions. Notably:

added major accessibility features and brightness controllers. made headlines because it officially removed Denuvo Anti-Tamper DRM from the game and retired the "Boosters" feature. (released in 2024) cleaned up internal executable files. DOOM Eternal — Update 6.66 Rev 2.2 Release Notes - Steam

To wrap up, the phrase refers to the holy grail of DOOM Eternal preservation. It represents a time before always-online DRM, before anti-cheat lag, and when the Super Shotgun Meathook worked exactly as the developers intended.