| Achievement | How to unlock
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| - Use the Tube in the Museum to its full potential.
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| - Use the Zebra in the Museum to its full potential.
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| - Freak out 5 people at once.
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| - Possess every object at least once.
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| - Use every spook on every item.
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| - Reach full atmosphere in every building.
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| - Complete the game with no window jumpers.
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