| Hat | How to unlock
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|---|
| Chef Hat | Charlie Brown, Pigpen, Linus, Lucy.
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| Football Helmet | Sally, Schrodinger, Snoopy, Marcy.
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| Santa Hat | Woodstock, Charlie Brown, Pigpen, Linus.
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| Top Hat | Lucy, Sally, Schrodinger, Snoopy.
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| Visor | Marcy, Woodstock, Charlie Brown, Pigpen.
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| Winter Hat | Linus, Lucy, Sally, Schrodinger.
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| Achievement | How to unlock
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|---|
| Arf Arf Arf! (40 points) | Jump on three enemies without touching the ground.
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| Arm Wrestler (40 points) | Unlock the Masked Marvel Costume.
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| Au revoir Red Baron (50 points) | Complete all Skies of Paris levels.
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| Best Friend (40 points) | Have a second player activate a Woodstock trigger.
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| Chop Chop Chop! (40 points) | Hover as normal Snoopy for more than 5 seconds.
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| Contact! (40 points) | Unlock the Flying Ace Costume.
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| Crash! (40 points) | Break through a wall as the Masked Marvel.
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| Deep Dark Jungle (50 points) | Complete all Peppermint Jungle levels.
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| Do the Bunny Dance (50 points) | Complete all Temple of Bunnies levels.
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| Dodge Balls (50 points) | Defeat The Mask Boss without being hit.
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| Home Again (40 points) | Finish a Level.
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| Jelly Beans! (40 points) | Collect all Jelly Beans in a single level.
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| Joe Cool (40 points) | Unlock the Joe Cool Costume.
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| Master of Disguise (40 points) | Unlock all Costumes.
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| One Small Step (50 points) | Complete all Lunar Surface levels.
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| Root Beer (70 points) | Collect all kids objects.
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| Scouts Form Up! (40 points) | Unlock the Beagle Scout Costume.
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| Snoopy Come Home (50 points) | Complete all Melody Chateau levels.
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| Staggers Imagination (50 points) | Complete all Parisian Underground levels.
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| To The Moon! (40 points) | Unlock the Astronaut Costume.
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| Together Again (60 points) | Rescue all the Kids.
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| World Famous Detective (40 points) | Unlock the Detective Costume.
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