Press [~] during the game and type in (codes are case sensitive):

 please god                     - God mode
 please giveall                 - Give all items
 please killall                 - Kill all enemies (which are in sight)
 please open                    - Open all doors
 please fly                     - Fly mode
 please ghost                   - No clipping
 please invisible               - Invisibility (as long as you don't attack)
 please tellall                 - Show all messages from Netricsa
 please refresh                 - Sets health to 100

 ---

 In the Testversion:

 Press [~] during the game and type in (codes are case sensitive):

 cht_bGod=1                     - Invulnerability
 cht_bGiveAll=1                 - All items
 cht_bRefresh=1                 - New energy
 cht_bFly=1                     - Fly mode
 cht_bGhost=1                   - No clipping mode
 cht_fTranslationMultiplayer=1  - Turbo mode
 cht_bInvisible=1               - Invisibility
 saveScreenShot()               - Screenshot