49Achievements
Pinata Party
Find and break every web cache in Episode Two.
(4.2%)
Into the Breach
Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
(23.5%)
Twofer
This Accomplishment is secret. Keep playing!
(19.8%)
Hit and Run
Run over 20 enemies with the car in Episode Two.
(9.7%)
Meet the Hunters
This Accomplishment is secret. Keep playing!
(18.9%)
Puttin' On a Clinic
Defeat the chopper in Episode Two without any misses.
(3.2%)
Gunishment!
This Accomplishment is secret. Keep playing!
(18.3%)
Cache Checker
Find every radar cache in chapter Under The Radar.
(12.4%)
Gordon Propelled Rocket
Unlock the rocket launcher lambda cache in chapter Under The Radar.
(15.0%)
Pedal to the Metal
Beat DOG in a race to the White Forest base.
(8.7%)
Quiet Mountain Getaway
This Accomplishment is secret. Keep playing!
(18.0%)
Little Rocket Man
Send the garden gnome into space.
(2.5%)
Secondary Silo Secured
This Accomplishment is secret. Keep playing!
(17.6%)
Neighborhood Watch
Save all buildings outside the missile silo from destruction.
(2.1%)
Defense of the Armament
This Accomplishment is secret. Keep playing!
(14.8%)
Payback
Kill a Hunter with its own flechettes.
(5.3%)
Lab Rat
Acquire the fully powered Aperture Science Handheld Portal Device.
(57.1%)
Fratricide
Do whatever it takes to survive.
(40.7%)
Partygoer
Make the correct party escort submission position decision.
(34.2%)
Heartbreaker
Complete Portal.
(31.9%)
Terminal Velocity
Fall 30,000 feet.
(10.2%)
Long Jump
Jump 300 feet.
(10.4%)
Cupcake
Beat two Portal advanced maps.
(10.5%)
Fruitcake
Beat four Portal advanced maps.
(7.0%)
Vanilla Crazy Cake
Beat all six Portal advanced maps.
(5.4%)
Basic Science
Earn bronze medals on all Portal challenges.
(1.2%)
Rocket Science
Earn silver medals on all Portal challenges.
(1.2%)
Aperture Science
Earn gold medals on all Portal challenges.
(1.2%)
Turret
Accumulate 10 turret kills with a single turret.
(6.6%)
Nemesis
Get five revenge kills.
(11.9%)
Hard to Kill
Get five kills in a row without dying.
(20.4%)
Master of Disguise
Trick an opposing medic into healing you.
(13.0%)
With Friends Like these...
Play in a game with seven or more players from your friends list.
(2.4%)
Dynasty
Win 20 games.
(9.0%)
Hardcore
Accumulate 1000 total kills.
(4.3%)
Powerhouse Offense
Win 2Fort with a shutout.
(21.2%)
Lightning Offense
Win Well in 5 minutes or less.
(11.8%)
Relentless Offense
Win Hydro without giving up a capture.
(10.0%)
Impenetrable Defense
Successfully defend Dustbowl without giving up a capture.
(10.4%)
Impossible Defense
Successfully defend Gravel Pit without giving up a capture.
(8.0%)
Head of the Class
Play a complete round with every class.
(6.5%)
World Traveler
Play a complete game on every map.
(9.3%)
Team Doctor
Accumulate 25000 heal points as a Medic.
(5.3%)
Flamethrower
Set five enemies on fire in 30 seconds.
(8.0%)
Atomizer
Disintegrate 15 soldiers by throwing them into a Combine ball field.
(11.4%)
Follow Freeman
Gain command of a squad of rebels in the uprising.
(21.6%)
Grey Matter
Get 25 headshots as a Sniper.
(6.3%)
Camera Shy
Detach security cameras from the walls.
(2.4%)
Friendly Fire
Knock down a turret with another turret.
(32.1%)