Acid Reflex
Kill an acid antlion worker.
✰ Rare4.2% of players unlocked this achievement
Anchor's Aweigh!
Get the airboat.
51.9% of players unlocked this achievement
Atomizer
Disintegrate 15 soldiers by throwing them into a Combine ball field.
12.4% of players unlocked this achievement
Attica!
Destroy the gunship in the hospital attic.
✰ Rare3.9% of players unlocked this achievement
Barnacle Bowling
Kill five barnacles with one barrel.
36.3% of players unlocked this achievement
Blast from the Past
Find the HEV Suit Charger faceplate in Eli's scrapyard.
20.5% of players unlocked this achievement
Bone Breaker
Kill 30 enemies with thrown physics objects.
✰ Rare1.5% of players unlocked this achievement
Bug Hunt
Use the antlions to kill 50 enemies.
31.2% of players unlocked this achievement
Cache Checker
Find every radar cache in chapter Under The Radar.
✰ Rare2.2% of players unlocked this achievement
Car Crusher
Use the cars to squash 15 antlions in Episode One.
✰ Rare1.5% of players unlocked this achievement
Citizen Escort
Don't let any citizens die when escorting them to the escape train.
✰ Rare2.6% of players unlocked this achievement
Conservationist
Kill five enemies with the same energy ball.
✮ Very Rare1% of players unlocked this achievement
Containment
Contain the Citadel core.
✰ Rare4.6% of players unlocked this achievement
Counter-Sniper
Kill all of the snipers in City 17.
10.8% of players unlocked this achievement
Deadly Harvest
Kill an enemy by planting a hopper mine.
✰ Rare3.5% of players unlocked this achievement
Defense of the Armament
Save the missile silo from the Combine offensive.
✰ Rare3% of players unlocked this achievement
SecretDefiant
Hit the trashcan cop with the can.
32.5% of players unlocked this achievement
Elevator Action
Survive long enough to get on the parking garage elevator.
✰ Rare4.2% of players unlocked this achievement
Escape From City 17
Escape City 17 with Alyx.
✰ Rare3.7% of players unlocked this achievement
Fight the Power
Shut down the supression device by disabling its generators.
27.4% of players unlocked this achievement
Flushed
Kill an enemy with a toilet.
✰ Rare7% of players unlocked this achievement
Follow Freeman
Gain command of a squad of rebels in the uprising.
30.2% of players unlocked this achievement
Get Some Grub
Squish every antlion grub in Episode Two.
✮ Very Rare0.7% of players unlocked this achievement
Giant Killer
Survive the rooftop strider battle in the ruins of City 17.
26.4% of players unlocked this achievement
Gnome Alone
If you are reading this achievement, Gabe Newell has successfully launched Gnome Chompski into space. If you did not also receive the achievement 'Manufacturing Ascent', Newell has abandoned his plans to shoot Noam Chomsky into space.
✰ Rare6.6% of players unlocked this achievement
Gordon Propelled Rocket
Unlock the rocket launcher lambda cache in chapter Under The Radar.
✰ Rare2.9% of players unlocked this achievement
Grave Robber
Steal a Zombine's grenade.
✰ Rare2.2% of players unlocked this achievement
Gunishment!
Destroy the Combine Autogun in the junkyard.
✰ Rare3.5% of players unlocked this achievement
Hack Attack!
Kill five enemies with a Manhack.
✰ Rare6.9% of players unlocked this achievement
SecretHallowed Ground
Escort Gregori safely through the church cemetery.
38.1% of players unlocked this achievement
Heavy Weapons
Get the airboat's mounted gun.
45.6% of players unlocked this achievement
Hit and Run
Run over 20 enemies with the car in Episode Two.
✰ Rare1.8% of players unlocked this achievement
Hot Potat0wned
Kill a Combine soldier with his own grenade.
✮ Very Rare0.9% of players unlocked this achievement
Into the Breach
Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
✰ Rare3.9% of players unlocked this achievement
Keep Off the Sand!
Cross the antlion beach in chapter Sandtraps without touching the sand.
✰ Rare5.6% of players unlocked this achievement
Lambda Locator
Find all lambda caches in Half-Life 2.
✰ Rare4% of players unlocked this achievement
Little Rocket Man
Send the garden gnome into space.
✮ Very Rare0.9% of players unlocked this achievement
Live Bait
Help Alyx snipe 30 enemies in Episode One.
✰ Rare1.9% of players unlocked this achievement
Malcontent
Escape the apartment block raid.
69.8% of players unlocked this achievement
Meet the Hunters
Survive the Hunter ambush with Alyx.
✰ Rare3.5% of players unlocked this achievement
Neighborhood Watch
Save all buildings outside the missile silo from destruction.
✮ Very Rare0.8% of players unlocked this achievement
One Man Army
Destroy six gunships in Half-Life 2.
27.4% of players unlocked this achievement
OSHA Violation
Kill 3 enemies using the crane.
21.4% of players unlocked this achievement
Pacifist
Contain the Citadel core without killing any stalkers.
✰ Rare1.2% of players unlocked this achievement
Payback
Kill a Hunter with its own flechettes.
✰ Rare1.3% of players unlocked this achievement
Pedal to the Metal
Beat DOG in a race to the White Forest base.
✰ Rare2.2% of players unlocked this achievement
Piñata Party
Find and break every web cache in Episode Two.
✰ Rare1.1% of players unlocked this achievement
Plaza Defender
Survive the generator plaza standoff in chapter Anticitizen One.
28.9% of players unlocked this achievement
Puttin' On a Clinic
Defeat the chopper in Episode Two without any misses.
✮ Very Rare0.9% of players unlocked this achievement
Quiet Mountain Getaway
Survive the ambush at White Forest Inn.
✰ Rare3.4% of players unlocked this achievement
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