| Achievement | Unlocked | Visibility | Global Unlocks | |
|---|---|---|---|---|
|
Cupcake
Beat two Portal advanced maps. |
3.1% | |||
|
Fruitcake
Beat four Portal advanced maps. |
2.3% | |||
|
Vanilla Crazy Cake
Beat all six Portal advanced maps. |
1.9% | |||
|
Heartbreaker
Complete Portal. |
16.0% | |||
|
Camera Shy
Detach security cameras from the walls. |
1.3% | |||
|
Partygoer
Make the correct party escort submission position decision. |
18.2% | |||
|
Basic Science
Earn bronze medals on all Portal challenges. |
1.1% | |||
|
Aperture Science
Earn gold medals on all Portal challenges. |
1.1% | |||
|
Rocket Science
Earn silver medals on all Portal challenges. |
1.1% | |||
|
Lab Rat
Acquire the fully powered Aperture Science Handheld Portal Device. |
26.3% | |||
|
Friendly Fire
Knock down a turret with another turret. |
17.4% | |||
|
Terminal Velocity
Fall 30,000 feet. |
1.9% | |||
|
Fratricide
Do whatever it takes to survive. |
22.3% | |||
|
Long Jump
Jump 300 feet. |
4.2% | |||
|
Transmission Received
..? |
1.2% |