Half-Life 2 Achievements Full list of all 69 Half-Life 2 achievements. It takes around 15-20 hours to unlock all of the achievements in the base game on Windows.The base game contains 33 achievements, and there is 1 DLC pack containing 36 achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc DLC Packs Group DLC packs together in list DLC Filter AllOwnedNone Flag Filter All None 69 Offline Mode 69 Single Player 26 Main Storyline 9 Collectable 24 Missable 7 Cumulative + Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Base Base Game (Excludes DLC) 482 33 4.632,3846,285 (19%)15-20h Defiant 2 guidesSubmissive 2 guidesMalcontentEscape the apartment block raid. 1 guideWhat cat?Break the mini-teleporter in Kleiner's lab. 1 guideTrusty HardwareGet the crowbar. 1 guideBarnacle BowlingKill five barnacles with one barrel. 1 guideAnchor's Aweigh!Get the airboat. 1 guideHeavy WeaponsGet the airboat's mounted gun. 1 guideVorticoughDiscover the hidden singing vortigaunt cave in chapter Water Hazard. 1 guideRevenge!Destroy the hunter-chopper in Half-Life 2. 1 guideBlast from the PastFind the HEV Suit Charger faceplate in Eli's scrapyard. 1 guideZero-Point EnergyGet the Gravity Gun in Black Mesa East. 1 guideTwo PointsUse DOG's ball to make a basket in Eli's scrapyard. 1 guideZombie ChopperPlay through Ravenholm using only the Gravity Gun. 1 guideHallowed Ground 1 guideOSHA ViolationKill 3 enemies using the crane. 1 guideTargetted AdvertisingPin a soldier to the billboard in chapter Highway 17. 1 guideWhere Cubbage Fears to Tread 1 guideOne Man ArmyDestroy six gunships in Half-Life 2. Keep Off the Sand!Cross the antlion beach in chapter Sandtraps without touching the sand. 1 guideBug HuntUse the antlions to kill 50 enemies. FlushedKill an enemy with a toilet. 1 guideWarden FreemanSurvive the second turret standoff in Nova Prospekt. Follow FreemanGain command of a squad of rebels in the uprising. 1 guideRadiation Levels DetectedGet through the toxic tunnel under City 17 in Half-Life 2. Plaza DefenderSurvive the generator plaza standoff in chapter Anticitizen One. Counter-SniperKill all of the snipers in City 17. 1 guideFight the PowerShut down the supression device by disabling its generators. Giant KillerSurvive the rooftop strider battle in the ruins of City 17. AtomizerDisintegrate 15 soldiers by throwing them into a Combine ball field. 1 guideSingularity Collapse Lambda LocatorFind all lambda caches in Half-Life 2. 3 guidesHack Attack!Kill five enemies with a Manhack. 1 guide Update 20th Anniversary Update 1,097 360 36 4.505,4352,369 (44%)0-1h Watch Your Head!Make it to the bottom of the Citadel's main elevator shaft in one piece. 1 guideContainmentContain the Citadel core. 1 guidePacifistContain the Citadel core without killing any stalkers. Car CrusherUse the cars to squash 15 antlions in Episode One. 1 guideElevator ActionSurvive long enough to get on the parking garage elevator. 1 guideLive BaitHelp Alyx snipe 30 enemies in Episode One. Attica!Destroy the gunship in the hospital attic. Citizen EscortDon't let any citizens die when escorting them to the escape train. Escape From City 17Escape City 17 with Alyx. The One Free BulletFinish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay! ConservationistKill five enemies with the same energy ball. Think Fast!Kill an Elite Soldier with his own energy ball. Zombie-queUse flares to light 15 zombies on fire. 1 guideAcid ReflexKill an acid antlion worker. Get Some GrubSquish every antlion grub in Episode Two. Piñata PartyFind and break every web cache in Episode Two. Into the BreachHelp Griggs and Sheckley hold off the antlion invasion inside the mine shaft. TwoferDefeat both antlion guards outside the White Forest. Hit and RunRun over 20 enemies with the car in Episode Two. Meet the HuntersSurvive the Hunter ambush with Alyx. Puttin' On a ClinicDefeat the chopper in Episode Two without any misses. Gunishment!Destroy the Combine Autogun in the junkyard. Cache CheckerFind every radar cache in chapter Under The Radar. Pedal to the MetalBeat DOG in a race to the White Forest base. Gordon Propelled RocketUnlock the rocket launcher lambda cache in chapter Under The Radar. Quiet Mountain GetawaySurvive the ambush at White Forest Inn. Little Rocket ManSend the garden gnome into space. Secondary Silo SecuredSecure the launch doors on missile silo 2. Neighborhood WatchSave all buildings outside the missile silo from destruction. Defense of the ArmamentSave the missile silo from the Combine offensive. PaybackKill a Hunter with its own flechettes. Bone BreakerKill 30 enemies with thrown physics objects. Deadly HarvestKill an enemy by planting a hopper mine. Hot Potat0wnedKill a Combine soldier with his own grenade. Grave RobberSteal a Zombine's grenade. Gnome AloneIf 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. 1 guide