Step 1 - Obtain Digital Card 7 and save the game.
Step 2 - Highlight Kamen Rider No.1 at the character selection screen,
then hold Up + L1 and press Circle.
Step 3 - Obtain Digital Cards 7 and 74 and save the game.
Step 4 - Highlight Kamen Rider No.2 at the character selection screen,
then hold Up + L1 and press Circle.
