Secret Options
     Go  into  Options,  then hold L1 + L2 + R1 + R2, until you hear a
boom and the screen will shake. Now, the "?" is selectable.

Play as Classic Characters
     At  the  character select screen, highlight Rayden, Jax, Kano, or
Kung Lao and Select.

Play as Chameleon
     Go  to  Human  Smoke and hold Left + R1 + R2 + Triangle + Sqaure.
When the round starts, Human Smoke will become Chameleon.

Stage Select
     Go to the character select screen and highlight Sonya, press Up +
Start.

Unlimited Credits
     At  the  Story  screen,  press  Down, Down, Up, Up, Right, Right,
Left, Left.