Lab Rat
Acquire the fully powered Aperture Science Handheld Portal Device.
Fratricide
Do whatever it takes to survive.
Partygoer
Make the correct party escort submission position decision.
Heartbreaker
Complete Portal.
Terminal Velocity
Fall 30,000 feet.
Long Jump
Jump 300 feet.
Cupcake
Beat two Portal advanced maps.
Fruitcake
Beat four Portal advanced maps.
Vanilla Crazy Cake
Beat all six Portal advanced maps.
Basic Science
Earn bronze medals on all Portal challenges.
Rocket Science
Earn silver medals on all Portal challenges.
Aperture Science
Earn gold medals on all Portal challenges.
Camera Shy
Detach security cameras from the walls.
Friendly Fire
Knock down a turret with another turret.
Transmission Received
..?