On the loading screen type `GIBB` (could be 'GGIB') then start the game and press:
'S' - for more armour 'W' - for more weaponry at bases 'L' - to level skip
http://www.netrover.com/~timt/cheats/d/dyter07.html (Amiga Plus Extra No. 5/97, 05/1997)