Portal

8 of 15 ach. unlocked (54%)
JustGeorge's achievements in Portal
Beat two Portal advanced maps.
Nov 23, 10
Do whatever it takes to survive.
May 23, 10
Knock down a turret with another turret.
Beat four Portal advanced maps.
Feb 12, 11
Complete Portal.
Nov 23, 10
Acquire the fully powered Aperture Science Handheld Portal Device.
Make the correct party escort submission position decision.
May 30, 10
Beat all six Portal advanced maps.
Nov 24, 10
Earn gold medals on all Portal challenges.
Locked
Earn bronze medals on all Portal challenges.
Locked
Detach security cameras from the walls.
Locked
Jump 300 feet.
Locked
Earn silver medals on all Portal challenges.
Locked
Fall 30,000 feet.
Locked
..?
Locked
(0.0952/d/web8)