Chameleon Twist cheats and cheat codes for Nintendo 64

Maximum health bar
If you are very low on life, enter to a room, hit Start and choose "Save"
to save the game. After, push Start to go back to the menu and choose "Exit" 
to jump back to the main menu. Pick "Load" and load back your lates saved 
game file. You will resume the game with maximum of the life bar.

Boss battle from the six stages
Find minimum 20 crowns and defeat the Boss on every stage. 
After, a box marked "....?" will appear on the stage 
selection screen.