Batman: Vengeance Cheats

Go to the Gasworks level. You will reach a room with two levels, each floor with two goons on them. First, take out the goons. Then, look around on the lower floor until you see a sewer pipe with boxes in the sewage. Carefully glide down and land on the first box. Jump over the next few boxes and pick up the envelope with an "E" on it. Finish the game and the cheat will be unlocked.

Enter all these on the main menu.
All power moves:press L,L,R,R,L,R,L,R
Unlimited use of Batlauncher:press Y,X,Y,X,L,R,L,R
Make Caped Crusader invincible:press L,R,X,L,R,Y,L
99 of every item:enter L,R,Y,Y
Unlock all FMV movies:enter L,L,X,X,Y,X,L,R
Unlimited Batarangs:enter L,R,Y,X
Unlimitted supply of handcuffs:enterX,Y,X,Y,L,R,R,L,L

PRESS X,Y,X,Y,L,R,R,L AT THE MAIN MENU

Go to the Gasworks level. You will reach a room with two levels, each floor with two goons on them. First, take out the goons. Then, look around on the lower floor until you see a sewer pipe with boxes in the sewage. Carefully glide down and land on the first box. Jump over the next few boxes and pick up the envelope with an "E" on it. Finish the game and the cheat will be unlocked.

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