Cheats, Codes & FAQs
Use DOG's ball to make a basket in Eli's scrapyard.
Radiation Levels Detected
Get through the toxic tunnel under City 17 in Half-Life 2.
Kill an acid antlion worker.
Get the airboat.
Destroy the gunship in the hospital attic.
Kill five barnacles with one barrel.
The One Free Bullet
Beat Episode One firing exactly one bullet. Grenade, crowbar, rocket, and Gravgun kills are okay!
Play through Ravenholm using only the Gravity Gun.
Successfully defend Gravel Pit without giving up a capture.
Little Rocket Man
Send the garden gnome into space.
Vanilla Crazy Cake
Beat all six Portal advanced maps.
Save all buildings outside the missile silo from destruction.
Earn gold medals on all Portal challenges.
Escape From City 17
Escape City 17 with Alyx.
Beat four Portal advanced maps.
Get Some Grub
Squish every antlion grub in Episode Two.
Keep Off the Sand!
Cross the antlion beach in chapter Sandtraps without touching the sand.
Win Hydro without giving up a capture.
Earn silver medals on all Portal challenges.
Don't let any citizens die when escorting them to the escape train.
Accumulate 1000 total kills.
Find all lambda caches in Half-Life 2.
Master of Disguise
Trick an opposing medic into healing you.
Puttin' On a Clinic
Defeat the chopper in Episode Two without any misses.
Defense of the Armament
Save the missile silo from the Combine offensive.
Quiet Mountain Getaway
Survive the Ambush in White Forest In
Destroy the hunter-chopper in Half-Life 2.
Kill an Elite Soldier with his own energy ball.
Survive the second turret standoff in Nova Prospekt.
With Friends Like these...
Play in a game with seven or more players from your friends list.
Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Win Well in 5 minutes or less.
Help Alyx snipe 30 enemies in Episode One.
Meet the Hunters
Survive the Hunter ambush with Alyx
Contain the Citadel core without killing any stalkers.
Kill a Hunter with its own flechettes.
Survive the generator plaza standoff in chapter Anticitizen One.
Gain command of a squad of rebels in the uprising.
Survive the rooftop strider battle in the ruins of City 17.
Hard to Kill
Get five kills in a row without dying.
Kill a Combine soldier with his own grenade.
Successfully defend Dustbowl without giving up a capture.
Use the antlions to kill 50 enemies.
Find every radar cache in chapter Under The Radar.
Beat two Portal advanced maps.
Win 20 games.
Survive long enough to get on the parking garage elevator.
Fight the Power
Shut down the supression device by disabling its generators.
Play a complete game on every map.
Get the Gravity Gun in Black Mesa East.
Use flares to light 15 zombies on fire.
Disintegrate 15 soldiers by throwing them into a Combine ball field.
Earn bronze medals on all Portal challenges.
Blast from the Past
Find the HEV Suit Charger faceplate in Eli's scrapyard.
Get the crowbar.
Accumulate 10 turret kills with a single turret.
Defeat both antlion guards outside the White Forest
Watch Your Head!
Make it to the bottom of the Citadel's main elevator shaft in one piece.
Break the mini-teleporter in Kleiner's lab.
Where Cubbage Fears to Tread
Defend Little Odessa from the Gunship Attack
Win 2Fort with a shutout.
Secondary Silo Secured
Secure the launch doors on missile silo 2.
Put the trash in the garbage can in HL2.
Pin a soldier to the billboard in chapter Highway 17.
Accumulate 25000 heal points as a Medic.
Fall 30,000 feet.
Get five revenge kills.
One Man Army
Destroy six gunships in Half-Life 2.
Kill 3 enemies using the crane.
Make the correct party escort submission position decision.
Pedal to the Metal
Beat DOG in a race to the White Forest base.
Find and break every web cache in Episode Two.
Get the airboat's mounted gun.
Hit and Run
Run over 20 enemies with the car in Episode Two.
Into the Breach
Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Acquire the fully powered Aperture Science Handheld Portal Device.
Jump 300 feet.
Escape the apartment block raid.
Gordon Propelled Rocket
Unlock the rocket launcher lambda cache in chapter Under The Radar.
Steal a Zombine's grenade.
Get 25 headshots as a Sniper.
Destroy the Combine Autogun thats in the Junkyard
Kill five enemies with a Manhack.
Head of the Class
Play a complete round with every class.
Kill an enemy by planting a hopper mine.
Throw the trash at the guard in the beginning of HL:2
Set five enemies on fire in 30 seconds.
Kill an enemy with a toilet.
Do whatever it takes to survive.
Knock down a turret with another turret.
Kill 30 enemies with thrown physics objects.
Detach security cameras from the walls.
Use the cars to squash 15 antlions in Episode One.
Kill five enemies with the same energy ball.
Contain the Citadel core.
Kill all of the snipers in City 17.