Half-Life 2 — Overachiever

Containment

Contain the Citadel core.

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Pacifist

Contain the Citadel core without killing any stalkers.

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Citizen Escort

Don't let any citizens die when escorting them to the escape train.

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Escape From City 17

Escape City 17 with Alyx.

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The One Free Bullet

Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!

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Elevator Action

Survive long enough to get on the parking garage elevator.

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Attica!

Destroy the gunship in the hospital attic.

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Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.

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Car Crusher

Use the cars to squash 15 antlions in Episode One.

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Live Bait

Help Alyx snipe 30 enemies in Episode One.

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Twofer

Defeat both antlion guards outside the White Forest.

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Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.

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Defense of the Armament

Save the missile silo from the Combine offensive.

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Meet the Hunters

Survive the Hunter ambush with Alyx.

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Secondary Silo Secured

Secure the launch doors on missile silo 2.

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Neighborhood Watch

Save all buildings outside the missile silo from destruction.

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Pedal to the Metal

Beat DOG in a race to the White Forest base.

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Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.

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Quiet Mountain Getaway

Survive the ambush at White Forest Inn.

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Piñata Party

Find and break every web cache in Episode Two.

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Cache Checker

Find every radar cache in chapter Under The Radar.

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Get Some Grub

Squish every antlion grub in Episode Two.

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Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.

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Gunishment!

Destroy the Combine Autogun in the junkyard.

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Hit and Run

Run over 20 enemies with the car in Episode Two.

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Payback

Kill a Hunter with its own flechettes.

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Acid Reflex

Kill an acid antlion worker.

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Little Rocket Man

Send the garden gnome into space.

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Grave Robber

Steal a Zombine's grenade.

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Zombie-que

Use flares to light 15 zombies on fire.

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Gnome Alone

Launch Half-Life 2 after Gabe Newell launched a garden gnome into space.

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Giant Killer

Survive the rooftop strider battle in the ruins of City 17.

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Hallowed Ground

Hidden achievement.

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Keep Off the Sand!

Cross the antlion beach in chapter Sandtraps without touching the sand.

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Singularity Collapse

Hidden achievement.

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Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.

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Zombie Chopper

Play through Ravenholm using only the Gravity Gun.

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Fight the Power

Shut down the supression device by disabling its generators.

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Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.

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Warden Freeman

Survive the second turret standoff in Nova Prospekt.

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What cat?

Break the mini-teleporter in Kleiner's lab.

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Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.

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Malcontent

Escape the apartment block raid.

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Lambda Locator

Find all lambda caches in Half-Life 2.

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Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.

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Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.

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Follow Freeman

Gain command of a squad of rebels in the uprising.

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Anchor's Aweigh!

Get the airboat.

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Heavy Weapons

Get the airboat's mounted gun.

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Trusty Hardware

Get the crowbar.

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Zero-Point Energy

Get the Gravity Gun in Black Mesa East.

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Defiant

Hidden achievement.

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Counter-Sniper

Kill all of the snipers in City 17.

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Barnacle Bowling

Kill five barnacles with one barrel.

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Revenge!

Destroy the hunter-chopper in Half-Life 2.

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Bug Hunt

Use the antlions to kill 50 enemies.

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OSHA Violation

Kill 3 enemies using the crane.

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Flushed

Kill an enemy with a toilet.

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Where Cubbage Fears to Tread

Hidden achievement.

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One Man Army

Destroy six gunships in Half-Life 2.

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Two Points

Use DOG's ball to make a basket in Eli's scrapyard.

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Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.

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Submissive

Hidden achievement.

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Think Fast!

Kill an Elite Soldier with his own energy ball.

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Hack Attack!

Kill five enemies with a Manhack.

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Conservationist

Kill five enemies with the same energy ball.

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Bone Breaker

Kill 30 enemies with thrown physics objects.

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Deadly Harvest

Kill an enemy by planting a hopper mine.

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Hot Potat0wned

Kill a Combine soldier with his own grenade.

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🏆 Half-Life 2