At the title screen, press L, R, Left, Right, Square, Circle, X, Triangle to unlock Situation 8.

Unlock Situation 8, then press Triangle, Down, Circle, Left, X, Up, Square, Right at the title screen to unlock Situation 9.

Unlock Situation 9, then press Right, Down, Up, Left, Circle, X, R, L at the title screen to unlock Situation 10.