Half-Life 2: Update Achievements Here is the full list of all 33 Half-Life 2: Update achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.Filter Achievement View View Image viewList view Sort by Won first then 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 Flag Filter All None 33 Offline Mode 33 Single Player 15 Main Storyline 2 Collectable 1 Missable 3 Cumulative + Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply AllWonNot wonWhere Cubbage Fears to TreadDefend Little Odessa from the Gunship attack. 12 September 2015 - Add a guideHallowed GroundEscort Gregori safely through the church cemetery. 21 June 2015 - Add a guideTwo PointsUse Dog's ball to make a basket in the scrapyard. 21 June 2015 - Add a guideZero-Point EnergyGet the Gravity Gun in Black Mesa East. 21 June 2015 - Add a guideRevenge!Destroy the Hunter-Chopper. 11 June 2015 - Add a guideHeavy WeaponsGet the airboat's mounted gun. 11 June 2015 - Add a guideAnchor's Aweigh!Get the airboat. 22 May 2015 - Add a guideBarnacle BowlingKill five barnacles with one explosive barrel. 19 May 2015 - Add a guideTrusty HardwareGet the crowbar. 14 May 2015 - Add a guideMalcontentEscape the apartment block raid. 14 May 2015 - Add a guideSubmissivePut the can in the trash. 14 May 2015 - 1 guideDefiantHit the trashcan cop with the can. Locked - 1 guideGiant KillerSurvive the rooftop strider battle in the ruins of City 17. Locked - Add a guideKeep Off the Sand!Cross the antlion beach in chapter Sandtraps without touching the sand. Locked - Add a guideSingularity CollapseDestroy the Citadel's reactore core. Locked - Add a guidePlaza DefenderSurvive the generator plaza standoff in chapter Anticitizen One. Locked - Add a guideZombie ChopperPlay through Ravenholm using only the Gravity Gun. Locked - Add a guideFight the PowerShut down the supression device by disabling its generators. Locked - Add a guideRadiation Levels DetectedGet through the toxic tunnel under City 17 in Half-Life 2. Locked - Add a guideWarden FreemanSurvive the second turret standoff in Nova Prospekt. Locked - Add a guideWhat cat?Break the mini-teleporter in Kleiner's Lab. Locked - Add a guideAtomizerDisintegrate 15 soldiers by throwing them into a Combine ball field. Locked - Add a guideLambda LocatorFind all lambda caches in Half-Life 2. Locked - Add a guideBlast from the PastFind the HEV Suit Charger faceplate in Eli's scrapyard. Locked - Add a guideVorticoughDiscover the hidden singing vortigaunt cave in chapter Water Hazard. Locked - Add a guideFollow FreemanGain command of a squad of rebels in the uprising. Locked - Add a guideCounter-SniperKill all of the snipers in City 17. Locked - Add a guideBug HuntUse the Antlions to kill 50 enemies. Locked - Add a guideOSHA ViolationKill 3 enemies using the crane. Locked - Add a guideFlushedKill an enemy with a toilet. Locked - Add a guideTargeted AdvertisingPin a soldier to the billboard in the chapter Highway 17. Locked - Add a guideOne Man ArmyDestroy six gunships in Half-Life 2. Locked - Add a guideHack Attack!Kill five enemies with a Manhack. Locked - Add a guide