Portal

9 of 15 ach. unlocked (60%)
Mastix's achievements in Portal
Detach security cameras from the walls.
Dec 3, 10
Beat two Portal advanced maps.
Dec 1, 10
Do whatever it takes to survive.
Dec 1, 10
Knock down a turret with another turret.
Dec 1, 10
Beat four Portal advanced maps.
Dec 1, 10
Complete Portal.
Dec 1, 10
Acquire the fully powered Aperture Science Handheld Portal Device.
Dec 1, 10
Make the correct party escort submission position decision.
Dec 1, 10
Beat all six Portal advanced maps.
Dec 1, 10
Earn gold medals on all Portal challenges.
Locked
Earn bronze medals on all Portal challenges.
Locked
Jump 300 feet.
Locked
Earn silver medals on all Portal challenges.
Locked
Fall 30,000 feet.
Locked
..?
Locked
(0.1779/d/web8)