Batman: Vengeance Cheats (PlayStation 2)

'D' is near the valve which lowers the third floodgate in 'Gasworks', there's rushing
sluge coming out of a large tube, there are several floating boxes, jump along them to
find 'D', this is very difficult for most people.

At the main options screen press L1 R1 L2 R2, if done correctly you'll hear a sound effect
confirming the code worked.

'E' is in the 'Swat chase' level, go down the elevator shaft and break the power box at
the bottom, go into the door which opens, directly above you, not at the top. Take the
secret key, ride the elevator to the top of the building and open the door. There's 'E'

'C' is in plant electrocution 2, fall down into the second hole on the long ramp, get a
secret key, grapple out, slide the rest of the way down and open the first door on the
left.

'B' is on one of the first crates in 'The Bridge', to get to it, climb the first ladder,
and glide around the obstructing crate, then make a simple jump/glide.

'A' is in the garden on the 'on the roof' level. When you are on the roof with the three
small balconies with doors and a large garden, drop down onto a ladge that runs along 1
and a half sides, use your batgrapple to reach a hidden ledge, go through the door and
voila.