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15 of 15 (100%) achievements earned:
Personal Achievements
 

Lab Rat

Acquire the fully powered Aperture Science Handheld Portal Device.
Unlocked 24 Nov, 2022 @ 4:43am

Fratricide

Do whatever it takes to survive.
Unlocked 25 Nov, 2022 @ 9:59am

Partygoer

Make the correct party escort submission position decision.
Unlocked 24 Dec, 2022 @ 11:37pm

Heartbreaker

Complete Portal.
Unlocked 25 Dec, 2022 @ 12:27am

Terminal Velocity

Fall 30,000 feet.
Unlocked 28 Dec, 2022 @ 12:16am

Long Jump

Jump 300 feet.
Unlocked 28 Dec, 2022 @ 12:16am

Cupcake

Beat two Portal advanced maps.
Unlocked 28 Dec, 2022 @ 12:16am

Fruitcake

Beat four Portal advanced maps.
Unlocked 28 Dec, 2022 @ 12:16am

Vanilla Crazy Cake

Beat all six Portal advanced maps.
Unlocked 28 Dec, 2022 @ 12:16am

Basic Science

Earn bronze medals on all Portal challenges.
Unlocked 28 Dec, 2022 @ 12:16am

Rocket Science

Earn silver medals on all Portal challenges.
Unlocked 28 Dec, 2022 @ 12:16am

Aperture Science

Earn gold medals on all Portal challenges.
Unlocked 28 Dec, 2022 @ 12:16am

Camera Shy

Detach security cameras from the walls.
Unlocked 28 Dec, 2022 @ 12:16am

Friendly Fire

Knock down a turret with another turret.
Unlocked 28 Dec, 2022 @ 12:16am

Transmission Received

..?
Unlocked 28 Dec, 2022 @ 12:16am