Ability Cards
After you beat the game once, you'll gain access to every ability card for non-evolved Resistance bakugan. You can then unlock Maxus Helios by collecting six traps (found in various boxes). Finally, you can complete the game a second time to unlock the cards for the evolved Resistance bakugan, along with Maxus Drago.
Cheat Codes
Select "Collection" at the main menu. Select "Unlock Codes", then enter HXV6Y7BF as a code to enable cheat mode. Then, enter one of the following codes to activate the corresponding cheat function.