Portal

11 of 15 ach. unlocked (74%)
Pr3tzals' achievements in Portal
Beat two Portal advanced maps.
Do whatever it takes to survive.
Knock down a turret with another turret.
Jul 5, 10
Beat four Portal advanced maps.
Complete Portal.
Acquire the fully powered Aperture Science Handheld Portal Device.
May 15, 10
Jump 300 feet.
May 18, 10
Make the correct party escort submission position decision.
Fall 30,000 feet.
..?
Apr 11, 11
Beat all six Portal advanced maps.
May 17, 10
Earn gold medals on all Portal challenges.
Locked
Earn bronze medals on all Portal challenges.
Locked
Detach security cameras from the walls.
Locked
Earn silver medals on all Portal challenges.
Locked
(0.1873/d/web8)