In order to enter the codes below, you'll have to understand which medals are which. At the Password screen, you will see a line-up of four medals. Each of them starts out bronze, but can be manipulated to cause different effects. Each time you press down on the D-Pad, you will change the medal. The following is a list of medal names (in order) as you scroll down through the list:
Bronze
Cross
Valor
Silver
Honor
Bravery
Crown
Diam
ond
Invisibility
To make yourself invisible to Mr. and Mrs. Tweedy, enter the following medals into the Password screen:
Crown
Bronze
Honor
Valor
Skip Stages
Enter the following medals on the password screen:
Honor
Valor
Bronze
Silver
This will allow you to skip to the next stage by hitting the SELECT Button during the pause screen.
Unlimited Time
At the password screen, enter the following medals to acquire unlimited time: