Here are all the level passwords. These work on any difficulty setting.

• 1-2: Ship, Skull, Fish, Anchor, Ship, Anchor
• 1-3: Ship, Anchor, Skull, Ship, Anchor, Fish
• 1-4: Skull, Ship, Fish, Anchor, Anchor, Ship
• 2-1: Fish, Fish, Anchor, Ship, Skull, Anchor
• 2-2: Skull, Anchor, Anchor, Fish, Anchor, Ship
• 2-3: Fish, Anchor, Ship, Ship, Ship, Skull
• 2-4: Anchor, Fish, Ship, Skull, Skull, Fish
• 3-1: Ship, Skull, Skull, Fish, Anchor, Skull
• 3-2: Fish, Skull, Anchor, Fish, Skull, Fish
• 3-3: Fish, Fish, Ship, Skull, Fish, Ship
• 3-4: Ship, Anchor, Ship, Fish, Anchor, Fish
• 4-1: Skull, Skull, Anchor, Ship, Fish, Fish
• 4-2: Ship, Anchor, Skull, Fish, Fish, Anchor
• 4-3: Skull, Ship, Skull, Skull, Fish, Ship
• 4-4: Ship, Fish, Ship, Fish, Ship, Anchor
• 5-1: Anchor, Ship, Fish, Skull, Fish, Ship
• 5-2: Fish, Ship, Anchor, Skull, Ship, Fish
• 5-3: Ship, Fish, Skull, Anchor, Anchor, Skull
• 5-4: Skull, Ship, Anchor, Fish, Ship, Skull