When entering these cheats enter "dipstick" before any cheat code. Note these
cheats are case sensitive.
Cheat code Description 
DIPSTICK Enable/disable cheat code 
REEN Re-enter level 
GOOBERS Restart current level 
GOTO Start anouther level 
GOARCH Leave current level 
GOGATES Go to DOS 
MAESTRO Change the game jukebox 
TOOSAD God Mode 
WOOF Dog mode? 
BADTRIP Acid mode 
BOING Less Gravity 
FLYBOY Flying mode 
PANIC Everything normat 
SPEED Autorun on/off 
\DIE Suicide 
\OOF Hurt yourself 
DIMOFF Turn Light dimming off 
DIMON Turn Light dimming on 
GOTA386 Turn ceiling and floor textures off 
GOTA486 Turn ceiling and floor textures on 
SHINEOFF Lights off 
SHINEON Lifhts on 
LONDON Fog enabled 
NODNOL Fog no more 
BURNME Asbestos suit 
SIXTOYS Gives you health bullet-proof armor 
SHOOTME Bullet-proof vest 
HUNTPAC Bullet-proof armor,keys, heatseeker and a split missle 
SLACKER All the keys 
LUNGDUNG A gas mask 
BOOZE A drunk missle 
JOHNWOO Douoble handguns 
FIREBOMB A fire bomb 
HOTTIMES Heat Seeking missle 
PLUGME A machine gun 
SPLIT Split missles 
SEEYA Full God Mode 
KESOFDEATH Energy Spere 
BONES A flame wall 
HOMERUN The Excalibat 
CUJO Full dog mode 



Well, here we go...

DIPSTICK   -enable cheats

general stuff:

CHOJIN     -invulnerability

SIXTOYS    -all keys

TOOSAD     -god mode (temporary)

SEEYA      -god mode (permanent)

FLYBOY     -allow flying

RIDE       -"missile cam", view follows missiles

GOARCH     -"wuss out", exit level

BADTRIP    -"magic mushrooms" trippy mode

BOING      -"funny mode", elastic walls & frictionless floors

weapons and equipment:

HUNTPACK   -outfit player

JOHNWOO    -the double pistols (Reservoir Dogs style)

PLUGEM     -the MP40 machine gun

VANILLA    -the standard bazooka

HOTTIMES   -heatseeking missiles

BOOZE      -"drunk" missiles

FIREBOMB   -incendiary missile

BONES      -"fire wall" missile

LUNGDUNG   -gasmask

SHOOTME    -bulletproof armour

BURNME     -asbestos armour

effects settings:
(turn these off for better speed)

DIMON
DIMOFF     -shading on/off

LONDON
NODNOL     -fog on/off

SHINEON
SHINOFF    -"light sourcing" on/off

and only available on registered version:

WOOF or CUJO (?)  -"dog mode", basically turn into a dog

HOMERUN           -wield a baseball bat

there are other cheats, but these are mostly debugging stuff,
eg remove health points, ceilings and floors on/off...