Faster Movement
Hold the triangle and press the x, R1(3) during game play. Note: the inventory screen will appear during entry of the code. Press triangle to resume play.
Free movement
Move Casper to the upper left corner of any game location. Hold Up/Left + L1 + R1 + Start to pause the game. Release Up/Left + L1, and press Down/Right + Triangle while continuing to hold R1+ Start. The game will resume in free movement mode. Press R1, then use the D-pad to fly over any wall. Press L1 to resume normal game play.