Unlockable Characters
These playable characters are unlocked in the game when you complete Story mode on a certain difficulty setting or find ALL the Gaps.
Unlock Gene Simmons as a Playable Character:
Complete Story mode on the Normal difficulty setting.
Unlock Iron Man as a Playable Character:
Complete Story mode on the Beginner difficulty setting.
Unlock Pedestrians as Playable Characters
Find ALL the Gaps in the game.
More tricks, tips and cheats for this game are right here - Tony Hawk's Underground cheats
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