In Underground mode, You can unlock more stages, characters, music tracks and movies.

Animal Unlock him by beating him in Underground mode.

Animal Defeat him in the third Toxic Grinder stage to unlock him.

Ariana Alloway Rescue her in the New York stage to unlock her.

Chayne Defeat her in the second Toxic Grinder stage to unlock her.

Crank Defeat him during the first Toxic Grinder stage to unlock him.

Dixon Von Blass Beat the final stage in Underground mode to unlock him.

Forx Defeat him in the final Toxic Grinder stage to unlock him.

Jake Dawson Rescue him in the Underwater Aquarium stage to unlock him.

Luc Decoppet Rescue him in the Underwater Aquarium stage to unlock him.

More Levels Defeat stages in Underground mode to unlock more stages.

Music Tracks Unlock an extra music track by reaching a new level.

Ronnie Banks Rescue him in the Underwater Aquarium stage to unlock him.

X Games Video Clips Retrieve the hidden rolls of film during certain levels to unlock X Games
clips in the Time Capsule optiom.