Klonoa 2 - Lunatea's Veil - Platform: Playstation 2

Play as Mometsuto
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Successfully complete the game to unlock Mometsuto as a playable character.

Boss battle
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Successfully complete the fairground levels to unlock a new area that allows
you to battle previously defeated Bosses.

Bonus levels
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Collect all six stars in a level to get a Momett doll. A bonus level will be
unlocked after you have accumulated eight and sixteen dolls.

Picture gallery
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Successfully complete the fairground levels to unlock an option for a
picture gallery.
Collect all 150 gems in a level to unlock its pictures in the gallery.

Music test
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Complete the either bonus level to unlock songs in the music box option.

Vision select
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Successfully complete the game and save. Start another game, then press R1
to display the status screen. You can now select any level by using the 
"Vision Selector" option.