At the 'Main' menu select 'Cheats' and click one of the 'Secret Codes' entries on the right side of the screen and enter the following case sensitive codes to unlock the corresponding effect. The code must then be activated for use.
ALL Cubes are Explosive: Enter EXPLOSIVEWORLD as a code.
Tracks are Solid Gold: Enter GOLDENTRACKS as a code.
Move Undetected by Enemies: Enter STEALTHARMOR as a code.
Kill or Stun Everything within Range: Enter BOTOFWAR as a code.
Laser Switches Colors Continuously: Enter RAINBOWLASER as a code.
Light Up Dark Areas: Enter GLOWINTHEDARK as a code.
WALL-E Wears Ski Goggles: Enter BOTOFMYSTERY as a code.