On the option screen or during play, type "CHAMP". Press 'HELP' twice and press FIRE to see a list of available cheats. Here are the cheat keys:
'F1'--Scatter gun | 'F6'--------Smart bomb
'F2'---Rapid fire | 'F7'-------Double base
'F3'--Machine gun | 'F8'------------Shield
'F4'----Superbolt | 'F9'---Kill all aliens
'F5'----Stun bomb | 'F10'-Extra power bars
If you are playing a two player game hold down 'DEL' and the desired function key to affect the second player.
On the title screen, type in "CHAMPIE" instead of just "CHAMP", the game reports that the {SUPERCHEAT} mode has been activated. You will now be able to use the following keys on the title screen to change the games parameters:
'F1'---------New drain value | 'F6'-New machine delay value
'F2'---New rapid drain value | 'F7'------New gain per frame
'F3'-New machine drain value | 'F8'------New max ship speed
'F4'---------New delay value | 'F9'------Press a number 1-5
'F5'---New rapid delay value | 'F10'-switch between screens
001----"ELEKTRA" | 010---"NARCISSUS" | 019--"TIDDLY POM"
002-----"SYZYGY" | 011---"DEBUTANTE" | 020-"KEWPIE DOLL"
003---"DRAMBUIE" | 012------"FIRKIN" | 021---"SEPULCHRE"
004-------"PLUG" | 013----"ACOUSTIC" | 022---"EUPHEMISM"
005----"SOPRANO" | 014----"TRIPTYCH" | 023--"GRAMMARIAN"
006-"MAYONNAISE" | 015-"JABBERWOCKY" | 024---"CROSSWORD"
007-----"FAUCET" | 016---"WHIMSICAL" | 025--"QUARANTINE"
008-----"POTATO" | 017--"CORNUCOPIA"
009----"WOOMERA" | 018-----"PUNJABI"
To enter the level codes you must highlight the {LEVEL} option and press fire.