Ending Bonus
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.
Show objects
While playing a game, press L1, R1, L1, R1, Triangle(2), Circle, Square(2), Circle, R2(2). The locations of hidden Opals, Bilbies, Golden Cogs, Rainbow Scales, and Thunder Eggs will be shown with colored lines from the sky (Opals and Rainbow Scales with a green line, Golden Cogs with a gold line, Thunder Eggs with a purple line, and Bilbies with a whitish line).
Aquarang, Elemental Boomerang, Dive, and Swim abilities
While playing a game, press L1, R1, L1, R1, Triangle(2), Square(2), Triangle, Square to unlock Aquarang, Elemental Rang, Dive, and Swim.
Technorang
While playing a game, press L1, R1, L1, R1, Triangle(3), Square, Triangle, Square to unlock the Technorang.
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.
Talismans
To get all the talismans, make sure you have three before you go into Cass's Pass. Sheila gives you one in Cass's Crest. Sly gives you one in The Final Battle. I had two before I went in and now Julius won't make his Talisman machine work. I only have 99% done because of that.
Sly's Easy Defeat
To easily defeat Sly in the "Lyre Lyre, Pants on Fire" level destroy half of his life points. Then use the Frostyrangs. If done correctly Sly should freeze and then break out and faint until his lifepoints have been drained.
Blow-up the birdie
Note: you must have the Kaboomarang for the cheat to work. When you go up to a post with a birdie on get out the kaboomarang and shoot the birdie there will be a puff of smoke and when it clears the birdie will be in the air and some feathers would have fallen off. KABOOM!
Zap the birdie
Note: you need to have got the Zappyrang. Find one of the posts with a triangle on it. Let the bird appear but dont talk to him. change rangs to you zappyrang (if you don't have it on) and fire it at the bird. He should jump up in the air telling you to stop it and should change between a skeleton and solid bird. like what happens in moovies when they get zapped.