Cheatmode:

Load a saved profile or create a new profile. Then, select the "Extras" option 
at the main menu. Select the "Gusteau's Shop" option, then the "Secrets" option. 
Choose a "Code " option and enter the cheat code to unlock that option. 
After a cheat option is unlocked, click on its name to enable it. 
Unlocked and enabled cheat options will be saved with the current profile. 
However, some cheat options cannot be disabled.

Code     Result
---------------
Code 01  Very Easy difficulty* Pieceocake
Code 02  No impact or damage from enemies, but still take water and falling damage1 Myhero
Code 03  No damage from enemies, but still take water and falling damage* Shielded
Code 04  Move undetected by enemies* Spyagent
Code 05  Fart when jumping Ilikeonions
Code 06  Head butt when attacking instead of tailswipe Hardfeelings
Code 07  Multi-player mode Slumberparty
Code 08  All Concept Art Gusteauart
Code 09  All four championship modes Gusteauship
Code 10  All single player and multi-player mini-games Mattelme
Code 11  All videos Gusteauvid
Code 12  All Bonus Artworks Gusteaures
Code 13  All Dream Worlds in Gusteau's Shop Gusteaudream
Code 14  All Slides in Gusteau's Shop Gusteauslide
Code 15  All single player mini-games Gusteaulevel
Code 16  All items in Gusteau's Shop Gusteaucombo
Code 17  +5000 Gusteau points Gusteaupot
Code 18  +10,000 Gusteau points Gusteaujack
Code 19  +50,000 Gusteau points Gusteauomni

* This code cannot be unlocked until it is bought with Gusteau points earned 
during Story mode.