Dave Mirra Freestyle BMX Cheat Codes:

-All levels
At the level selection screen in pro quest mode, press Left, Up, Right, Down, Left, Down, Right, Up, Left, Y to unlock all levels.

-Play as Slim Jim
At the rider selection screen in pro quest mode, press Down(2), Left, Right, Up(2), Y to unlock Slim Jim. Alternately, successfully complete the game with any rider to unlock a bonus bike and Slim Jim.

-All bikes
At the bike selection screen in pro quest mode, press Up, Left, Up, Down, Up, Right, Left, Right, Y to unlock all bikes. Note: Each time a new bike is selected this code will have to be re-entered.

-All styles
At the style selection screen in pro quest mode, press Left, Up, Right, Down, Left, Down, Right, Up, Left, Y to unlock all styles. Note: Each time a new bike is selected this code will have to be re-entered.