Complete the following tasks to unlock the corresponding feature.
Unlock Treasure Hunt Mode: Clear the game on any level and this feature will become an available option at the 'Main' menu. In Treasure Hunt mode you replay the game without having to complete the puzzles to collect the missing treasure.
Unlock White Swimsuit: This outfit becomes available for the Mediterranean Sea Expedition when you complete the game.
Unlock Storyboards: This feature becomes available when you complete the game on the Master Survivalist difficulty setting.