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

Lab Rat

Acquire the fully powered Aperture Science Handheld Portal Device.
Unlocked 30 Nov, 2017 @ 3:07pm

Fratricide

Do whatever it takes to survive.
Unlocked 30 Nov, 2017 @ 3:48pm

Partygoer

Make the correct party escort submission position decision.
Unlocked 16 Dec, 2017 @ 7:20am

Heartbreaker

Complete Portal.
Unlocked 16 Dec, 2017 @ 8:10am

Terminal Velocity

Fall 30,000 feet.
Unlocked 24 Feb, 2018 @ 1:09pm

Long Jump

Jump 300 feet.
Unlocked 16 Dec, 2017 @ 7:54am

Cupcake

Beat two Portal advanced maps.
Unlocked 16 Dec, 2017 @ 8:28am

Fruitcake

Beat four Portal advanced maps.
Unlocked 24 Feb, 2018 @ 1:37pm

Vanilla Crazy Cake

Beat all six Portal advanced maps.
Unlocked 24 Feb, 2018 @ 2:13pm

Basic Science

Earn bronze medals on all Portal challenges.
Unlocked 18 Jan, 2023 @ 2:36pm

Rocket Science

Earn silver medals on all Portal challenges.
Unlocked 18 Jan, 2023 @ 2:36pm

Aperture Science

Earn gold medals on all Portal challenges.
Unlocked 18 Jan, 2023 @ 2:56pm

Camera Shy

Detach security cameras from the walls.
Unlocked 24 Feb, 2018 @ 12:39pm

Friendly Fire

Knock down a turret with another turret.
Unlocked 30 Nov, 2017 @ 3:34pm

Transmission Received

..?
Unlocked 23 Feb, 2018 @ 12:50pm