While playing a game, press Left Analog-stick Down + Right Analog-stick Up, X, Circle, Square, Triangle.
While playing a game, hold the Left Analog-stick Left + Right Analog-stick Right, then press Circle, X, Square, Triangle.
Successfully complete the game on the easy difficulty setting to unlock the sketch gallery.
Successfully complete the game on the normal difficulty setting to unlock the background gallery.
Successfully complete the game on the hard difficulty setting to unlock the model gallery.
