SD Gundam G Generation Spirits Cheats for Playstation 2

At the title screen, enter Down, Up, Down, Up, Left, Left, Right, Right, R3, R3, L3, L3, X, O. After that you will hear a confirmation sound. During the level select screen, hold R2 and up and select the stage will change that stage's difficulty to Hard. Hold R2 and down instead will change the difficulty to Very Hard.