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37 of 42 (88%) achievements earned:
Personal Achievements
 

Hit and Run

Break out of the Combine prisoner transport vehicle.
Unlocked Dec 1, 2020 @ 7:02pm

Quaranta Giorni

Enter the Quarantine Zone.
Unlocked Dec 1, 2020 @ 10:59pm

Mazel Tov

Pick up and smash 50 glass bottles.
Unlocked Dec 4, 2020 @ 10:40am

Good Grub

Feed the snark.
Unlocked Jan 1, 2021 @ 3:29pm

Mag-Snagger

Catch Russell's ammo magazine before it hits the ground.
Unlocked Jan 1, 2021 @ 3:46pm

Sustenance

Receive a tasty treat.
Unlocked Dec 1, 2020 @ 11:52pm

Zombie with a Shotgun

Collect the shotgun.
Unlocked Dec 2, 2020 @ 12:00am

Xen Garden

Enter the explosive Xen infestation.
Unlocked Dec 2, 2020 @ 5:39am

Off the Rails

Stop the prisoner transport train.
Unlocked Dec 2, 2020 @ 5:58am

Checking In

Reach the Northern Star.
Unlocked Dec 2, 2020 @ 6:42am

Heart-Breaker Hotel

Get creative turning the power back on.
Unlocked Dec 2, 2020 @ 7:01am

Surface Tension

Escape the underground pit.
Unlocked Dec 2, 2020 @ 10:04pm

Unbonded

Collect the SMG.
Unlocked Dec 2, 2020 @ 10:32pm

Cord-Cutter

Shut down the substation.
Unlocked Dec 2, 2020 @ 11:07pm

Blast From the Past

Defuse a roomful of explosive barrels.
Unlocked Dec 3, 2020 @ 1:22pm

Sound Strategy

Escape the distillery without killing Jeff.
Unlocked Oct 10, 2021 @ 2:31am

Flat Note

Kill Jeff.
Unlocked Dec 4, 2020 @ 10:49am

Crustacean Frustration

Kill the annoying headcrab before it breaks everything.
Unlocked Oct 10, 2021 @ 2:15am

Hold Your Liquor

Catch a bottle falling out of a cupboard before it breaks and alerts Jeff.
Unlocked Dec 4, 2020 @ 10:35am

Sea Level

Reach the aquatic exhibits.
Unlocked Dec 4, 2020 @ 11:13am

Triple Bypass

Solve the tanker yard's electrical puzzle and escape.
Unlocked Dec 4, 2020 @ 2:35pm

High Water March

Start climbing the water tower.
Unlocked Dec 4, 2020 @ 3:10pm

Textbook Jinxing

Wake the Strider.
Unlocked Dec 4, 2020 @ 3:37pm

Point Extraction

Get to the superweapon.
Unlocked Dec 5, 2020 @ 5:22am

Consequences

Make your choice.
Unlocked Dec 5, 2020 @ 5:26am

Dead Giveaway

Loot a corpse.
Unlocked Dec 1, 2020 @ 7:18pm

Smash and Grab

Break open a supply crate with your hands.
Unlocked Dec 1, 2020 @ 11:03pm

Up in Arms

Install your first pistol upgrade.
Unlocked Dec 1, 2020 @ 11:13pm

Pro-Pain

Kill a grunt by shooting their gas tank.
Unlocked Dec 2, 2020 @ 5:47am

Indirect Approach

Kill a Combine Heavy while their shield is up.
Unlocked Dec 5, 2020 @ 4:51am

Combine Harvester

Use the gravity gloves to loot an item off a living Combine soldier.
Unlocked Dec 2, 2020 @ 11:16pm

Xen Lootism

Snatch a Xen grenade from its resting place.
Unlocked Dec 2, 2020 @ 6:54am

Safe Trip

Use the multitool to hack a tripmine.
Unlocked Dec 2, 2020 @ 11:33pm

Deadliest Catch

Use the gravity gloves to intercept an incoming enemy grenade in mid-flight.
Unlocked Sep 23, 2021 @ 12:29am

Near-Jeff Experience

Stay close to Jeff for 10 seconds (but not too close).
Unlocked Dec 3, 2020 @ 2:41pm

Team Spirit

Bring Russell a bottle of vodka.
Unlocked Oct 10, 2021 @ 2:33am

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.
Unlocked Dec 1, 2020 @ 5:52pm



On a Roll

Interact with the playground somehow.

Freshly Squeezed

Test your grip on a headcrab heart.
+3

3 hidden achievements remaining

Details for each achievement will be revealed once unlocked