DOOM Cheats

Passwords:
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Deimos Lab: pk04tmkstr
Refinery: h3bwgbdldb
A very diffucult level: v8hfn54356
Club DOOM extra level code: JCGDNSL556
Invincibility:
PAUSE GAME, DOWN, L2, SQUARE, R1, RRIGHT, L1, LEFT, CIRCLE
All weapons and ammo:
PAUSE GAME, X, TRIANGLE, L1, UP, DOWN, R2, LEFT, LEFT
All the maps plus objects:
Triangle, Triangle, L2, R2, L2, R2, Right, Circle
Free Stuff:
X, Triangle, L1, Up, Down, R2, Left, Left
Level Warp (Unverified):
Right, Left, R2, R1, Triangle, L1, Circle, X
X-Ray Vision:
L1, R2, L2, R1, Right, Triangle, X, Right
Transparent code: L1,R2,L2,R1,RIGHT,TRIANGLE,X,RIGHT
Multiple level passwords:
At enter password screen hit X to select B, but keep holding it. Move the
cursor to the right one space at a time. It will look like this "BCCDDFFGGH"
By moving one space at a time, in different directions, you can find many
passwords. For example club doom is down, right, down, right,down, right.
If you die on a level and you had collected a few weapons previously, rather
than restarting the level by pressing a key after you die, press START then
SELECT to get the options screem, go to PASSWORD and press X twice. This will
restart your level with all previous weapons and health.
If you can make it all the way to level 30 without dying, you will get to play
ping pong with one of the DOOM creatures.