Successfully complete the game with all cogs, eggs, and opals collected for a 100% completion to unlock a bonus level and an extra FMV sequence after the ending credits.
Zoomerang
Collect ten golden cogs to unlock the Zoomerang.
Multirang
Collect twenty golden cogs to unlock the Multirang.
Infrarang
Collect thirty golden cogs to unlock the Infrarang.
Easy Kills
If you have the Multirang and have to fight a group of Frills, run around in circles while throwing all of your boomerangs at once.
Infinite Health
During gameplay, quickly enter these following codes to unlock these cheats. If entered correctly, you will get infinite health. Enter the following code: Press White, Black, White, Black, Y, Y, Y, Y, B, B.