Playtime past 2 weeks:
0h

View global achievement stats
You must be logged in to compare these stats to your own
28 of 50 (56%) achievements earned:
Personal Achievements
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Unlocked 25 Dec, 2020 @ 4:55am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked 2 Feb, 2021 @ 1:57pm

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Unlocked 3 Feb, 2021 @ 5:21am

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Unlocked 13 Jan, 2021 @ 10:23am

Convection Refinement

Ruin the microwave casserole.
Unlocked 14 Jan, 2021 @ 11:51am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked 7 Jan, 2021 @ 8:49am

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Unlocked 13 Jan, 2021 @ 7:44am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked 17 Dec, 2020 @ 11:30am

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked 16 Jan, 2021 @ 4:07am

Kinetic Repulsion

Kill a Marine with their own Grenade.
Unlocked 21 Jan, 2021 @ 1:08pm

Mega Hertz

Kill 5 Enemies with one Grenade.
Unlocked 18 Dec, 2020 @ 6:08am

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked 31 Dec, 2020 @ 10:00am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked 25 Dec, 2020 @ 4:05am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked 21 Jan, 2021 @ 4:03am

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Unlocked 25 Feb, 2023 @ 12:51am

Quantum Capacitance

Overcharge it anyway.
Unlocked 17 Dec, 2020 @ 12:54am

Rare Specimen

Send the Hidden Hat to Xen.
Unlocked 13 Jan, 2021 @ 1:26pm

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked 17 Dec, 2020 @ 11:51am

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Unlocked 16 Feb, 2021 @ 9:39am

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.
Unlocked 13 Jan, 2021 @ 8:00am

xen when

Wait too long to jump into the Lambda Teleporter.
Unlocked 16 Dec, 2024 @ 12:32am

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Unlocked 17 Jan, 2021 @ 4:33am

Doctor’s Signature

Deliver the finishing blow to Gonarch with your Crowbar.
Unlocked 19 Jan, 2021 @ 1:34pm

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unlocked 25 Dec, 2020 @ 3:15am

Specimen GG

Take out all three Healing Crystals in Nihilanth’s Chamber at the same time​.
Unlocked 18 Jan, 2021 @ 11:35am

Late for Work

Defeat Nihilanth in under 4 minutes.​
Unlocked 18 Jan, 2021 @ 11:40am

Limitless Potential

Accept G-Man’s offer of employment.
Unlocked 25 Dec, 2020 @ 4:13am

Rather an Anticlimax

Decline G-Man’s offer of employment.
Unlocked 25 Dec, 2020 @ 4:12am



Ethically Questionable

Conduct all of the questionable research experiments.

Futile Resistance

Kill 10 Enemies with Snarks.

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.

Universal Gravitation

Get killed by your own Snarks.

Prolific Popper

Kill all Protozoans in the Borderworld.

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.

One Step Ahead

Kill 10 Enemies with Tripmines​​.

Our Brains And Your Brawn

Assemble all the possible Scientists and Guards at the end of Office Complex.

Orbital Trajectory

Skip the opening Xen island with a secret jump.​

Gonad Glider

Get whacked into oblivion in the ledge fight.

Post-Mortem Interval

Find each member of the missing research teams.

Laser Immunization

Complete Interloper without taking any laser damage.

Black Mesa Decathlon Winner

Escape the Gargantua’s Lair without taking any damage from Gargantuas.

Well-Done

Cook a Grenade for too long.
+6

6 hidden achievements remaining

Details for each achievement will be revealed once unlocked