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

Lab Rat

Acquire the fully powered Aperture Science Handheld Portal Device.
Unlocked 22 Nov, 2018 @ 5:18pm

Fratricide

Do whatever it takes to survive.
Unlocked 4 Dec, 2018 @ 6:31pm

Partygoer

Make the correct party escort submission position decision.
Unlocked 4 Dec, 2018 @ 6:52pm

Heartbreaker

Complete Portal.
Unlocked 5 Dec, 2018 @ 7:48am

Terminal Velocity

Fall 30,000 feet.
Unlocked 6 Dec, 2018 @ 10:19am

Long Jump

Jump 300 feet.
Unlocked 28 Mar, 2019 @ 3:59pm

Cupcake

Beat two Portal advanced maps.
Unlocked 5 Dec, 2018 @ 9:58am

Fruitcake

Beat four Portal advanced maps.
Unlocked 6 Dec, 2018 @ 7:40am

Vanilla Crazy Cake

Beat all six Portal advanced maps.
Unlocked 6 Dec, 2018 @ 9:43am

Basic Science

Earn bronze medals on all Portal challenges.
Unlocked 31 Mar, 2019 @ 8:50am

Rocket Science

Earn silver medals on all Portal challenges.
Unlocked 31 Mar, 2019 @ 8:50am

Aperture Science

Earn gold medals on all Portal challenges.
Unlocked 31 Mar, 2019 @ 8:50am

Camera Shy

Detach security cameras from the walls.
Unlocked 28 Mar, 2019 @ 7:54pm

Friendly Fire

Knock down a turret with another turret.
Unlocked 4 Dec, 2018 @ 9:33am

Transmission Received

..?
Unlocked 28 Mar, 2019 @ 7:27pm