Enter Honor, Valor, Bronze, Silver as a password. Pause the game and press Select to advance to the next level.
Enter Crown, Bronze, Honor, Valor as a password.
Enter Diamond, Honor, Cross, Crown as a password.
The game's passwords work by entering various medals. To change the default medal (Bronze) to one of the others, press Down the following number of times:
| Password | |
| Bronze, Cross, Crown, Bravery | |
| Diamond, Bravery, Honor, Bronze | |
| Cross, Bravery, Bronze, Bronze | |
| Honor, Crown, Diamond, Crown | |
| Valor, Diamond, Cross, Silver | |
| Honor, Valor, Cross, Bronze | |
| Diamond, Silver, Cross, Crown | |
| Honor, Valor, Bravery, Diamond | |
| Bronze, Bravery, Cross, Bravery |
Note: You must have a 2.1 or higher version of the Game Shark to use these codes in a Game Boy Color system.
| Infinite Feed | 0109D0C1 |