Acquiring Elemental Sprites:
How to acquire various Elemental Sprites throughout the game.

Pummel Weed Defeat the Shadow Troll in the Enchanted Kingdom.
Rubble Defeat the Shadow Troll in the Forgotten Forest.
Ash Rescue Halis. Major Ruin Defeat the Shadow Troll in Lobster Hollow.
Chilla Rescue Lenya.
Flex Defeat the shadow troll in Sulfer Cave.
Deep Blue Defeat the Shadow Troll in Water Cave.
40 Below Defeat the shadow troll in the ice cave.
Thermite Shadow Troll at Ogre Swamp Snare Rescue Yeros

Thorn's Castle High Score Unlockables:
For the unlockables below, you have to get the specified score or higher to get the unlockable.

Alternate Costume - Kameo 100,000
Making Backgrounds Video 500,000
Troll Song 1,000,000
Concept Video 1,500,000
Test Cutscene 2,000,000
Cheats Set #1 2,500,000

Forgotten Forest High Score Unlockables:
For the unlockables below, you have to get the specified score or higher to get the unlockable.

Animation Video 200,000
Alternate Costume - Pummel Weed 400,000
Wotnot Book Video 800,000
Alternate Costume - Rubble 1,200,000
Cutscene Player 1,600,000
Cheats Set #2 2,000,000

Water Temple High Score Unlockables:
For the unlockables below, you have to get the specified score or higher to get the unlockable.

Alternate Costume - Major Ruin 2,000,000
Cutscene Videos 1,500,000
Alternate Costume - Ash 1,000,000
Alternate Costume - Kameo 500,000
Boss Fights 2,500,000
Cheat Set #3 3,000,000

Snow Temple High Score Unlockables:
For the unlockables below, you have to get the specified score or higher to get the unlockable.

Evolution of the Characters Video 500,000
Alternate Costume - Deep Blue 1,000,000
Music Player 1,500,000
Alternate Costume - Chilla 2,000,000
Character Model Video 2,500,000
Cheat Set #4 3,000,000

Thorn's Pass High Score Unlockables:
For the unlockables below, you have to get the specified score or higher to get the unlockable. These high scores are for Thorn's Pass.

Alternate Costume - Kameo 2,500,000
Deleted Moves Movie 3,000,000
Evolution Videos 3,500,000
Alternate Costume - Flex 4,000,000
Animatic Videos 4,500,000
Cheat Set #5 5,000,000

Thorn's Airship High Score Unlockables:
For the unlockables below, you have to get the specified score or higher to get the unlockable. These high scores are for Thorn's Airship.

Early Footage Video 500,000
Deleted Scenes Videos 1,000,000
Alternate Costume - 40 Below 1,500,000
Airship Concept Video 2,000,000
End Concept Video 2,500,000
Cheat Set #6 3,000,000

Total High Score Unlockables:
For the unlockables below, you have to get the specified score or higher to get the unlockable. These high scores are for the total accumulated score.

Concept Art Set 1 9,000,000 Total
Concept Art Set 2 12,000,000 Total
Alternate Costume - Snare 15,000,000 Total
Animatic Videos 2 18,000,000 Total
Deleted Cutscenes Video 21,000,000 Total
Alternate Costume - Thermite 24,000,000 Total

Acquiring Crystal Eyes:
Eye of Restoration - as Kameo, restores health Under a shell in the enchanted Kingdom

Eye of Protection - Increases Kameo's Defense; Decreases Kameo's Attack Near the top of the ancient tower.

Eye of Spirit (hidden in a hallway behind a sheet) Past the portal to the mainland, there is a big door that needs lit dragon heads to open, flame them and go thru another door like it.

Eye of Attack In the Hall of mirrors, use thermite's Mortar ability to blow up the statue in the middle.

Original Kameo Costume:
Get an "A" rank on all the levels.

Xbox Live Achievements:
Below is the list of Achievements in the game you can unlock to add points to your Gamerscore on your GamerCard on Xbox Live. There are a total of 26 achievements, all total up to 1000 points. The number next to the achievement in parenthesis is the amount of points you get for that achievement.

These are the 15 Achievements that aren't listed as "Secret." There is a total of 700 Points from the Achievements below. The other 300 are from the Secret ones; 10 are from finding the Warrior transformations, and the last one is beating Thorn in Single Player mode. You get 20 points for each Warrior, and 100 for beating Thorn.

Freed Halis Kameo rescued Halis from the Forest Temple
Freed Lenya Kameo rescued Lenya from the Water Temple
Freed Yeros Kameo rescued Yeros from the Snow Temple
Thorn's Castle ranking 'A' rank on Thorn's Castle
Forgotten Forest ranking 'A' rank on Forgotten Forest
Water Temple ranking 'A' rank on Water Temple
Snow Temple ranking 'A' rank on Snow Temple
Thorn's Pass ranking 'A' rank on Thorn's Pass
Thorn's Airship ranking 'A' rank on Thorn's Airship
Beaten Queen Thyra (Co-Op) Defeated Queen Thyra in a Co-Op Quest
Beaten Old Mawood (Co-Op) Defeated Old Mawood in a Co-Op Quest
Beaten Corallis (Co-Op) Defeated Corallis in a Co-Op Quest
Beaten Lord Drok (Co-Op) Defeated Lord Drok in a Co-Op Quest
Beaten Thorn (Co-Op) Defeated Thorn in a Co-Op Quest
Game Completed The game has been fully completed!!

Banjo Radio:
In the Forgotten Forest Glade, enter Creeper's Home (the one blocked by rocks earlier in the game). On the left as you enter, there should be a chest of drawers with a radio on top. Approach the radio and press A to turn it on, to get a remix of the old Banjo-Kazooie tune playing in the background. The song only plays inside the house, however.

Eye of Strength:
Go to the chamber of Living Portraits in the center of the Enchanted Kingdom's Palace. There you will see a statue of Thorn, who is holding an orb with a hole in the middle. Within that hole is the Eye of Strength. Morph into Thermite, and approach the statue. Aim a bomb shot so that a bomb will either hit the orb, or go into the hole where the Eye is. The statue will explode and the eye will drop to the floor, simply move to the pedestal to pick it up.