Just so, what is the god key Wolfenstein?
Introduced during the last third of The New Colossus, the God Key is a Da'at Yichud artifact that mystifies even the brilliant yet eccentric scientist Set Roth (essentially the Doc Brown of the Wolfenstein universe).
Also, how do you use the God key in Wolfenstein? To unlock God Key in Wolfenstein Youngblood you have to play the story mission all the way to the main boss. He is in the last mission of the game, here you will fight the final battle of the game. God key requires a collectible hidden in Lab X, this will be revealed during the cutscene.
Similarly one may ask, how do you use the God key?
You will unlock your God Key ability after you have finished the Raid Mission: Lab X mission. After obtaining God Key you will immediately unlock the God Key achievement as well. Now all you need to do is go in front of those doors that say 'Open with God Key' and use the ability.
What happened between Wolfenstein 2 and Youngblood?
Wolfenstein: Youngblood is a standalone sequel to Wolfenstein II: The New Colossus serving as a prelude to Wolfenstein 3. The sequel takes place 19 years after The New Colossus after the Second American Revolution liberated America from Nazi rule and into the 1980s and focuses on B.J.'s twin daughters.