Type them at the console
ADD-MRCRANKY - Add Single Enemy
ADD-MOB - Add 10 New Enemy
DEMOWRITE - Start Writing DEMO File
DEMOSTOP - Stop Writing DEMO File
DEMOPLAY - Play Demo File
IAMBECOMEDEATH - Add Nuke
NOHEISENBERG - Add Meson Cannon
BETTERTHANTESLA - Add EMD
ONESHOTONEKILL - Add HIVE MISSILES
TAKETHESTICK - Toggle Autopilot
CUETHECREDITS - Show Credits
IMAWUSS - Set Wuss to Mission Complete
IMASISSYCRYBABY - Toggle Success/Fail State
ZEUS-23 - Toggle Autocannon
GO-ME-THE-GHILLIE - Add Camoflauge
WHO-DAT-WHO-DAT-HUH - Add Avionics Package