Pro class trucks:
Successfully complete the first nine tracks in single race mode.
Unlimited class trucks:
Successfully complete the first twenty-seven tracks in single race mode.

Monster truck:
Successfully complete all 36 tracks on the hard difficulty setting in single race mode to unlock the monster truck.

Humvee:
Finish in first place in the first three seasons of career mode in all divisions to unlock the Humvee.

Shelby Dodge Durango:
Finish in first place in season four of career mode in the speed division to unlock the Shelby Dodge Durango.

Dodge T-Rex:
Finish in first place in season four of career mode in the power division to unlock the Dodge T-Rex.

Rod Hall Hummer:
Finish in first place in all divisions in career mode to unlock the Rod Hall Hummer.

Controlled landing:
Hold R after a jump, then use the Left Analog-stick to steer your descent.