In Story Mode, you can normally start from the first five rounds but if you input this code, you can start from any of the ten rounds and a chime will indicate you did it right.

Effect	Code
All rounds available at Story Mode start	L1, R1, L1, R1, L1, R1, L1, R1, L1, R1, Left, Right, Left, Right, Left, Right, Left, Right, Left, Right, L2, R2, L2, R2, L2, R2, L2, R2, L2, R2.