Press M+I+L to obtain everything (doesn't work in all versions)

Cheat Mode:

Start game with

WOLF3D -next [Enter] (v1.0)
WOLF3D -goobers [Enter] (v1.1)

Hit [Ctrl]+[Tab]+[Enter] (v1.0) or [Alt]+[Shift]+[Backspace] (v1.1) to activate all these cheatkeys :

Use [Tab] + a letter :

[G] God modus
[I] Free Items
[W] Warp level
[E] End level
[S] Slow motion
[F] Coordinates
[B] Border color
[Q] Quit to Dos
[T] See sprites
[M] Memory usage
[C] Statistics
[N] Walk t. Walls (v1.0)
[V] Add VBL's (v1.1)
[H] Hurt yourself
[O] Overhead map (v1.0)
[X] Exta items (v1.1)

(v1.0) means : works ONLY on version 1.0
(v1.1) means : works ONLY on version 1.1 or above

Note: These cheats are disabled in some versions but [L]+[I]+[M] still works in ALL of them