Portal

7 of 15 ach. unlocked (47%)
Cobradabeast's achievements in Portal
Beat two Portal advanced maps.
May 27, 10
Do whatever it takes to survive.
May 19, 10
Knock down a turret with another turret.
May 17, 10
Complete Portal.
May 25, 10
Acquire the fully powered Aperture Science Handheld Portal Device.
May 16, 10
Make the correct party escort submission position decision.
May 20, 10
Fall 30,000 feet.
May 2, 11
Earn gold medals on all Portal challenges.
Locked
Earn bronze medals on all Portal challenges.
Locked
Detach security cameras from the walls.
Locked
Beat four Portal advanced maps.
Locked
Jump 300 feet.
Locked
Earn silver medals on all Portal challenges.
Locked
..?
Locked
Beat all six Portal advanced maps.
Locked
(0.1046/d/web8)