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30 of 33 (91%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.

Submissive

Put the can in the trash.
Unlocked 30 May, 2010 @ 5:14pm

Malcontent

Escape the apartment block raid.
Unlocked 7 Oct, 2011 @ 9:36am

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked 7 Oct, 2011 @ 9:43am

Trusty Hardware

Get the crowbar.
Unlocked 22 Aug, 2014 @ 1:49pm

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 30 Dec, 2022 @ 2:32pm

Anchor's Aweigh!

Get the airboat.
Unlocked 31 Dec, 2022 @ 4:31pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 31 Dec, 2022 @ 4:57pm

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked 31 Dec, 2022 @ 5:12pm

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 31 Dec, 2022 @ 5:08pm

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 4 Feb, 2012 @ 2:44pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 4 Feb, 2012 @ 2:44pm

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 10 Feb, 2021 @ 2:14am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 10 Feb, 2021 @ 2:54am

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 10 Feb, 2021 @ 1:58pm

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 10 Feb, 2021 @ 2:08pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 10 Feb, 2021 @ 1:49pm

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 10 Feb, 2021 @ 3:20pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 10 Feb, 2021 @ 3:21pm

Flushed

Kill an enemy with a toilet.
Unlocked 7 Feb, 2023 @ 3:06pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 22 Feb, 2021 @ 8:46am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 4 Aug, 2012 @ 10:01pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 22 Feb, 2021 @ 9:26am

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 22 Feb, 2021 @ 9:44am

Counter-Sniper

Kill all of the snipers in City 17.
Unlocked 22 Feb, 2021 @ 10:07am

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 21 Mar, 2013 @ 8:52pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 22 Feb, 2021 @ 10:54am

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked 8 Feb, 2023 @ 3:01pm

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 22 Feb, 2021 @ 11:36am

Hack Attack!

Kill five enemies with a Manhack.
Unlocked 31 Dec, 2022 @ 8:32pm



Zombie Chopper

Play through Ravenholm using only the Gravity Gun.

Keep Off the Sand!

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

Lambda Locator

Find all lambda caches in Half-Life 2.