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36 of 42 (86%) achievements earned:
Personal Achievements
 

Hit and Run

Break out of the Combine prisoner transport vehicle.
Unlocked 16 Nov @ 11:04pm

Quaranta Giorni

Enter the Quarantine Zone.
Unlocked 17 Nov @ 12:59am

Mazel Tov

Pick up and smash 50 glass bottles.
Unlocked 23 Nov @ 2:18am

Good Grub

Feed the snark.
Unlocked 16 Nov @ 10:27pm

On a Roll

Interact with the playground somehow.
Unlocked 25 Nov @ 10:43am

Little Slugger

Represent yourself with a specific prop on Russell's map.
Unlocked 25 Nov @ 10:05am

Eye of the Geiger

Measure Russell with the Geiger counter.
Unlocked 25 Nov @ 10:52am

Mag-Snagger

Catch Russell's ammo magazine before it hits the ground.
Unlocked 16 Nov @ 11:48pm

Sustenance

Receive a tasty treat.
Unlocked 16 Nov @ 10:53pm

Freshly Squeezed

Test your grip on a headcrab heart.
Unlocked 25 Nov @ 11:07am

Zombie with a Shotgun

Collect the shotgun.
Unlocked 17 Nov @ 2:15am

Xen Garden

Enter the explosive Xen infestation.
Unlocked 19 Nov @ 9:31am

Off the Rails

Stop the prisoner transport train.
Unlocked 19 Nov @ 11:00am

Checking In

Reach the Northern Star.
Unlocked 19 Nov @ 11:43am

Heart-Breaker Hotel

Get creative turning the power back on.
Unlocked 19 Nov @ 1:10pm

Surface Tension

Escape the underground pit.
Unlocked 19 Nov @ 1:59pm

Unbonded

Collect the SMG.
Unlocked 21 Nov @ 8:39am

Cord-Cutter

Shut down the substation.
Unlocked 21 Nov @ 9:29am

Blast From the Past

Defuse a roomful of explosive barrels.
Unlocked 22 Nov @ 8:58am

Flat Note

Kill Jeff.
Unlocked 22 Nov @ 9:40am

Crustacean Frustration

Kill the annoying headcrab before it breaks everything.
Unlocked 27 Nov @ 10:53am

Hold Your Liquor

Catch a bottle falling out of a cupboard before it breaks and alerts Jeff.
Unlocked 27 Nov @ 11:21am

Sea Level

Reach the aquatic exhibits.
Unlocked 22 Nov @ 10:50am

Triple Bypass

Solve the tanker yard's electrical puzzle and escape.
Unlocked 23 Nov @ 3:02am

High Water March

Start climbing the water tower.
Unlocked 23 Nov @ 3:58am

Textbook Jinxing

Wake the Strider.
Unlocked 23 Nov @ 6:22am

Point Extraction

Get to the superweapon.
Unlocked 23 Nov @ 9:38am

Consequences

Make your choice.
Unlocked 23 Nov @ 10:21am

Dead Giveaway

Loot a corpse.
Unlocked 17 Nov @ 12:36am

Smash and Grab

Break open a supply crate with your hands.
Unlocked 17 Nov @ 1:33am

Up in Arms

Install your first pistol upgrade.
Unlocked 17 Nov @ 5:29am

Pro-Pain

Kill a grunt by shooting their gas tank.
Unlocked 19 Nov @ 9:56am

Xen Lootism

Snatch a Xen grenade from its resting place.
Unlocked 19 Nov @ 12:44pm

Safe Trip

Use the multitool to hack a tripmine.
Unlocked 21 Nov @ 10:22am

Deadliest Catch

Use the gravity gloves to intercept an incoming enemy grenade in mid-flight.
Unlocked 22 Nov @ 8:19am

Team Spirit

Bring Russell a bottle of vodka.
Unlocked 22 Nov @ 10:08am



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.

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.
+3

3 hidden achievements remaining

Details for each achievement will be revealed once unlocked