PC Cheat Codes

ECC\----------------must be typed first before all others
WWW\----------------Woundless With Weapons/invincibility/all weapons, 
                         press Ins. or 0 to switch
EKG\----------------Extra Killing Gore/More blood, guts, limbs, jaws, 
                         eyeballs, etc..
MAP\----------------Shows entire map/press Tab to activate map
GTL\----------------Go To Level/jump to any level of the game
GOD\----------------Hand of god mode
MER\----------------Flying
DOG\----------------Dog mode*
LEE\----------------Jukebox

Note: These aren't all the codes, but they are all that is really needed.

dnkroz--------------God mode/invincibility
dnstuff-------------Get all items, ammunition, etc.
dnscottyxyy---------skip to episode x, level yy
dncashman-----------cash will spew out everywhere when you press
                          the spacebar
dnunlock------------unlocks all locked doors*
dnmonsters----------monsters will disappear before your eyes
dnshowmap-----------shows entire map, press Tab to activate map
dnunclip------------Walk through walls (do not use unless
                          emergancy, remember to turn it off when done)

Note: These are not all the codes, they are all that is needed.

swgreed------------all cheets on
swgimme------------get all items
swtrix-------------enables "bunny rocket"
swghost------------Walk through walls(no clipping mode)
                       (use sparingly, please)
swmap--------------Shows entire map, press 'Tab' to activate

Note: that might seem very little, but that is all you need, most of the other ones are lame

MIL-------hold all three letters down at once, you will get full ammo, 
          and full health, the only drawback, is that is brings your
          score down to zero

Note: yes, that is the only one for Wolfenstein

To enter cheat code, during game play, hit ENTER and a MSG: prompt will appear at the bottom of the screen, then enter the following codes:

These codes can be accessed in single player mode by hitting 't' and typing them or by hitting one of the F1....F4 keys. The only cheats that apply to multiplayer are: eyeofgod, morningafter, and saladtossed.

*eyeofgod - allows extra level of zoom on lower level machines
*saladtossed -choose any level (you will have to go to the load screen after and do that ctrl h/w thing)
twobyfour -builds units(ex: twobyfour dragoon)
hermes -speeds up building of units
donkeys -anything that shoots a missile (wopr missile silo/wopr hunter, shoots jeeps instead of missiles)
*morningafter -removes fog of war
gimmiegimmie -allows you to build everything, even without command center
unclejohn -god mode
chaching -adds 10,000 to cash total every time it is entered
mrmuscle -upgrades player's armor
bigsofty -downgrades enemy armor
coffee -upgrades player's speed
beer -downgrades enemy speed
shaft -upgrade player's firepower
shank -downgrade enemy's firepower
*=Also works for multiplayer