Wolfenstein: The New Order Cheats - Xbox One

Enigma Codes
Enter the following Enigma Codes to unlock various in game bonuses and modes (located in one of the Tabbed menus by pressing the "Tips and Hints" button):

999 mode (UBER Difficulty, Health overcharged to 999 but lowers to health 100) and unlimited ammo.: ROW 1 -- (1,2,3,4,5,6,7,8,9) ROW 2 -- (8,7,6,5,4,3,2,1,9).
Hardcore mode (UBER Difficulty, No Health/Armor drops) - ROW 1 -- (3,6,9,3,6,9,3,6,9) ROW 2 -- (6,3,9,6,3,9,6,3,9).
Ironman mode (UBER Difficulty, 1 life/Permadeath) - ROW 1 -- (4,8,3,7,2,6,1,5,9) ROW 2 -- (5,1,6,2,7,3,8,4,8).
Walk in the Park mode (HUD disabled, Death Incarnate difficulty) - ROW 1 -- (2,4,6,8,1,3,5,7,9) ROW 2 -- (7,5,3,1,8,6,4,2,9).

Wolfenstein 3D Nightmare Easter Egg
Play for about a few hours into the game. Once you arrive at the headquarters of the resistance movement, go to the top floor. There's a mattress on the ground just left of the bulls-eye hanging on the wall. Focusing on the mattress will give you the option to enter a "nightmare." Enter the "nightmare" and you will find yourself in the very first level of Wolfenstein 3D!