From the options screen, go to the Hats section and select 'Enter your code', then input the following codes to unlock all of the secret hats for Snoopy.
| Hat | How to unlock
|
|---|
| - Charlie Brown, Pigpen, Linus, Lucy.
|
| - Sally, Schrodinger, Snoopy, Marcy.
|
| - Woodstock, Charlie Brown, Pigpen, Linus.
|
| - Lucy, Sally, Schrodinger, Snoopy.
|
| - Marcy, Woodstock, Charlie Brown, Pigpen.
|
| - Linus, Lucy, Sally, Schrodinger.
|
