DOOM (2016)

					
Terminator 2 Movie Easter Egg:

During ‘Mission 3: Meltdown’ in Story Campaign mode you will come across a Foundry facility that has lava everywhere. If you jump in the lava and stay there until you die your Marine will give the thumbs up like in the Terminator 2 movie where the T-800 Terminator dies in the lava.
Débloquer le New Game Plus :

Terminez une fois le mode Story Campagin pour débloquer une fonctionnalité similaire à " New Game + " : lorsque vous terminez une mission, vous avez la possibilité de " Continuer ". Cette option vous permettra de conserver TOUTES vos améliorations lors de vos prochains passages dans le jeu.
Hidden Super Turbo Turkey Puncher 3 Mini-Game:

Originally featured in DOOM 3 this mini-game can be found in the ‘Advanced Research Complex’ mission in the MIXON hallway that has the grey storage blocks stacked up in the corner.
Déverrouillez le mode ultra-cauchemar :

Althrough this feature for the Story Campaign mode is available from the start you must play through the game on any difficulty setting up to the end of ‘Mission 6: Into the Fire’ to unlock it.