On the title screen or during play, type "HAVE A BAD DAY". The screen should flash to let you know it worked. Now use the following keys: 'F1'________Level 1. 'F6'___Level 3 boss. 'F2'___Level 1 boss. 'F7'________Level 4. 'F3'________Level 2. 'F8'___Level 4 boss. 'F4'___Level 2 boss. 'F9'________Level 5. 'F5'________Level 3. 'F10'__Level 5 boss. 'L'_______________Advance to the next level. 'D'________Kill all opponents on the screen.