Make-Your-Own-Movie:
Successfully complete Story mode on the Gold difficulty setting to unlock the Make-Your-Own-Movie under the options menu.
Silver Mermaidman movie:
Successfully complete Story mode on the Silver difficulty setting to unlock the Silver Mermaidman movie under the options menu.
Silver mode:
Successfully complete Story mode on the Bronze difficulty setting to unlock the Silver difficulty setting.
Bronze Mermaidman movie:
Successfully complete Story mode on the Bronze difficulty setting to unlock the Bronze Mermaidman movie under the options menu.
Gold Mermaidman movie:
Successfully complete Story mode on the Gold difficulty setting to unlock the Gold Mermaidman movie under the options menu.