All Tricks
TrickedOut.

Master Chief
If you want the master chief from Halo2, then go to the cheatcodes menu and type "greenCheef".

Yeti Character
Enter "GoTeamYeti" as a cheatcode.

Bigfoot Character
Enter "BrotherOfYeti" as a cheatcode.

Shiny Gal Character
Enter "MetalMaam" as a cheatcode.

80's Snowboarder Character
Enter "Radical" as a cheatcode.

Steezy The Penguin Character
Enter "ChillinWSteezy" as a cheatcode.

Bones Character
Enter "FunnyBone" as a cheatcode.

MoCap Character
Enter "MoCapMan" as a cheatcode.

Hermit Joe Character
Enter "GetOffMyLand" as a cheatcode.

Frosty Jack Character
Enter "FrostByte" as a cheatcode.

Play As Bunny
Enter Bunny as a case-sensitive code to unlock a pink rabbit as a Pro rider.

All Characters
Enter AllMyPeeps as a case-sensitive code.

Maximum Stats
Enter MaxSkills as a case-sensitive code.

No Collisions
Enter NoCollisions as a case-sensitive code.

Fast Boarder
Enter FastMove as a case-sensitive code.

Icy Courses
Enter AllIce as a case-sensitive code.

No Crashing
Enter DontCrash as a case-sensitive code.

Fast Spins
Enter SuperSpin as a case-sensitive code.

Low Gravity
Enter LowGravity as a case-sensitive code.

All FMV Sequences
Enter ShowRewards as a case-sensitive code.

Disable Active Codes
Enter noCheats as a case-sensitive code.

TrickedOut
Enter TrickedOut as a case-sensitive code.

Unlock All Levels
Enter "AllLevels" at the cheat screen.