Category – Xbox Cheats
Xbox Cheats Title – Tony Hawk’s Underground
Cheat: Unlock All Movies:
Enter digivid in the Cheats Menu.
Moon Gravity Code:
Select “Cheat Codes” at the options menu, then enter “noforce” as a code. (An alternate code is “getitup”.) You can also get this code if you complete all 129 goals.
Go to the options menu, then go to cheats, and type in “letitslide”.
Enter “keepitsteady” on the cheat menu.
T.H.U.G. Music Code:
Enter “holeshot” on the cheats menu.
Unlock Iron Man:
Beat the story mode to unlock Iron Man from Marvel comics.
Unlock Pedestrian Skaters:
Find every Gap in the game (including in the hidden levels).
If you complete all 129 goals, you will unlock the following:
Beat the story mode on sick difficulty to unlock T.H.U.D.