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34 of 42 (81%) achievements earned:
Personal Achievements
 

Hit and Run

Break out of the Combine prisoner transport vehicle.
Unlocked 22 Oct, 2024 @ 11:03am

Quaranta Giorni

Enter the Quarantine Zone.
Unlocked 26 Oct, 2024 @ 1:15pm

Mazel Tov

Pick up and smash 50 glass bottles.
Unlocked 20 Nov, 2024 @ 12:34pm

Good Grub

Feed the snark.
Unlocked 23 Oct, 2024 @ 12:19pm

Little Slugger

Represent yourself with a specific prop on Russell's map.
Unlocked 23 Nov, 2024 @ 6:11am

Eye of the Geiger

Measure Russell with the Geiger counter.
Unlocked 24 Oct, 2024 @ 12:15pm

Mag-Snagger

Catch Russell's ammo magazine before it hits the ground.
Unlocked 24 Oct, 2024 @ 12:16pm

Sustenance

Receive a tasty treat.
Unlocked 1 Nov, 2024 @ 9:21am

Zombie with a Shotgun

Collect the shotgun.
Unlocked 23 Nov, 2024 @ 8:17am

Xen Garden

Enter the explosive Xen infestation.
Unlocked 23 Nov, 2024 @ 11:58am

Off the Rails

Stop the prisoner transport train.
Unlocked 4 Nov, 2024 @ 11:42am

Checking In

Reach the Northern Star.
Unlocked 23 Nov, 2024 @ 1:58pm

Heart-Breaker Hotel

Get creative turning the power back on.
Unlocked 24 Nov, 2024 @ 4:13am

Surface Tension

Escape the underground pit.
Unlocked 24 Nov, 2024 @ 5:00am

Unbonded

Collect the SMG.
Unlocked 24 Nov, 2024 @ 5:20am

Cord-Cutter

Shut down the substation.
Unlocked 24 Nov, 2024 @ 6:16am

Blast From the Past

Defuse a roomful of explosive barrels.
Unlocked 10 Nov, 2024 @ 5:29am

Sound Strategy

Escape the distillery without killing Jeff.
Unlocked 21 Nov, 2024 @ 6:42am

Flat Note

Kill Jeff.
Unlocked 26 Nov, 2024 @ 8:04am

Crustacean Frustration

Kill the annoying headcrab before it breaks everything.
Unlocked 16 Nov, 2024 @ 11:58am

Hold Your Liquor

Catch a bottle falling out of a cupboard before it breaks and alerts Jeff.
Unlocked 16 Nov, 2024 @ 12:35pm

Sea Level

Reach the aquatic exhibits.
Unlocked 21 Nov, 2024 @ 10:12am

Triple Bypass

Solve the tanker yard's electrical puzzle and escape.
Unlocked 23 Nov, 2024 @ 4:30am

High Water March

Start climbing the water tower.
Unlocked 23 Nov, 2024 @ 5:17am

Textbook Jinxing

Wake the Strider.
Unlocked 27 Nov, 2024 @ 1:28pm

Point Extraction

Get to the superweapon.
Unlocked 27 Nov, 2024 @ 2:19pm

Consequences

Make your choice.
Unlocked 27 Nov, 2024 @ 2:24pm

Dead Giveaway

Loot a corpse.
Unlocked 24 Oct, 2024 @ 12:56pm

Smash and Grab

Break open a supply crate with your hands.
Unlocked 26 Oct, 2024 @ 1:34pm

Up in Arms

Install your first pistol upgrade.
Unlocked 26 Oct, 2024 @ 1:45pm

Pro-Pain

Kill a grunt by shooting their gas tank.
Unlocked 10 Nov, 2024 @ 5:29am

Safe Trip

Use the multitool to hack a tripmine.
Unlocked 10 Nov, 2024 @ 4:22am

Near-Jeff Experience

Stay close to Jeff for 10 seconds (but not too close).
Unlocked 11 Nov, 2024 @ 9:59am

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 22 Oct, 2024 @ 10:09am



On a Roll

Interact with the playground somehow.

Freshly Squeezed

Test your grip on a headcrab heart.

Indirect Approach

Kill a Combine Heavy while their shield is up.

Combine Harvester

Use the gravity gloves to loot an item off a living Combine soldier.

Xen Lootism

Snatch a Xen grenade from its resting place.

Deadliest Catch

Use the gravity gloves to intercept an incoming enemy grenade in mid-flight.
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2 hidden achievements remaining

Details for each achievement will be revealed once unlocked