All power moves and 120 achievement points
     Press  L(2),  R(2),  L,  R,  L,  R at the main menu. A sound will
confirm correct code entry.

Master code
     Press  L,  R,  L,  R,  X(2),  Y(2) at the main menu. A sound will
confirm correct code entry.

Unlimited Electric Batarangs
     At  the  main menu screen, press L, R, Y, and X. If you enter the
code correctly, you will hear a sound.

Unlimited Handcuffs
     Press  X,  Y,  X, Y, L, R(2), L(2) at the main menu. A sound will
confirm correct code entry.

Unlock Joker
     To unlock Joker, enter the password: JOKER4LIFE

View All FMV Sequences
     At  the  menu  screen,  press  L, L, X, X, Y, X, L, and R. If you
enter the code correctly, you will hear a sound.