Hook, Line, And Cheddar mini-game:
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Enter 893634 as a code to unlock the Hook, Line, And Cheddar mini-game.
Alternately, successfully complete Silver Story mode.
Silver Story mode challenges:
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Enter 486739 as a code to unlock the Silver Story mode challenges.
All action figures:
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Enter 977548 as a code to unlock all action figures.
Silver mode:
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Successfully complete Story mode on the Bronze difficulty setting to unlock the
Silver difficulty setting.
Gold mode:
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Successfully complete Story mode on the Silver difficulty setting to unlock the
Gold difficulty setting.
Bronze Mermaidman movie:
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Successfully complete Story mode on the Bronze difficulty setting to unlock the
Bronze Mermaidman movie.
Silver Mermaidman movie:
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Successfully complete Story mode on the Silver difficulty setting to unlock the
Silver Mermaidman movie.
Gold Mermaidman movie:
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Successfully complete Story mode on the Gold difficulty setting to unlock the
Gold Mermaidman movie.
Make Your Own Movie option:
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Successfully complete Story mode on the Gold difficulty setting to unlock the
Make Your Own Movie option. Alternately, enable the „Hook, Line, And Cheddar
mini-game”, „Silver Story mode challenges”, and „All action figures” codes then
go to „Mermaidman Movie” in the „Bonuses” screen. The „Make-Your-Own-Movie”
option will be unlocked.
Loot Scootin’ level:
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Successfully complete the Tethered & Weathered, Mother Of Pearl, and Hook, Line
And Cheddar levels in Gold story mode to unlock the Loot Scootin’ level.
Mother Of Pearl level:
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Successfully complete Bronze Story mode to unlock the Mother Of Pearl level.
Rock, Paper, Scissors level:
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Successfully complete the Loot Scootin’ level with over 300 points in Story mode
to unlock the Rock, Paper, Scissors level.
Tethered & Weathered level:
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Successfully complete Gold Story mode to unlock the Tethered & Weathered level.
Two Up level:
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Successfully complete the Loot Scootin’ level with over 300 points in Story mode
to unlock the Two Up level.
Defeating Plankton:
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Make a Bubble Bomb and throw it at him when you can see his belly, then hit him.
Repeat this until he is defeated. He will do new attacks.