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Aperture Science
Earn gold medals on all Portal challenges.
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Basic Science
Earn bronze medals on all Portal challenges.
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Camera Shy
Detach security cameras from the walls.
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Cupcake
Beat two Portal advanced maps.
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Fratricide
Do whatever it takes to survive.
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Friendly Fire
Knock down a turret with another turret.
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Fruitcake
Beat four Portal advanced maps.
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Heartbreaker
Complete Portal.
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Lab Rat
Acquire the fully powered Aperture Science Handheld Portal Device.
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Partygoer
Make the correct party escort submission position decision.
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Rocket Science
Earn silver medals on all Portal challenges.
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Terminal Velocity
Fall 30,000 feet.
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Vanilla Crazy Cake
Beat all six Portal advanced maps.
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