Complete the game to unlock Azrael for purchase for 1.5 million Studs at the Batcave.

To unlock the Villain Hunt mini-game, complete all three Villain chapters at Arkham Asylum.

To skip the animation sequence while the Studs are being totaled, press A.

Activate the following cheats by pressing the corresponding sequences of buttons at the main menu:

CHEAT EFFECT - CHEAT CODE
All extras - UP, DOWN, L, R, L, R, L, LEFT, RIGHT, X(2), Y(2), B(2), L, UP, DOWN, L, R, L, R, UP(2), DOWN, START, SELECT.
All episodes and Free Play mode - RIGHT, UP, R, L, X, Y, RIGHT, LEFT, B, L, R, L, DOWN(2), UP, Y(2), X(2), B(2), UP(2), L, R, START, SELECT.
All characters - X, UP, B, DOWN, Y, LEFT, START, RIGHT, R(2), L, R(2), DOWN(2), UP, Y(3), START, SELECT.
+1 million Studs - X, Y, B(2), Y, X, L(2), R(2), UP, DOWN, LEFT, RIGHT, START, SELECT.
+3 million Studs - UP(2), B, DOWN(2), X, LEFT(2), Y, L, R, L, R, B, Y, X, START, SELECT.

Complete the game to unlock Huntress for purchase for 200,000 Studs at the Batcave.