Here are some cheats and tips for the game Batman Beyond.
Flight mode:
Pause game play, then press Up, Down, Left(2).
Level skip
Level 2: C76564J
Level 3: L88R8TC
Level 4: Y539WZG
Level 5: NTTJ9KY
Original Batman Suit
Pause game play, then hold L press C-Left, down, up C-Right.�
The screen shakes if done right.