Playtime past 2 weeks:
0h

View global achievement stats
You must be logged in to compare these stats to your own
24 of 50 (48%) achievements earned:
Personal Achievements
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Unlocked 27 Dec, 2020 @ 9:53am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked 30 Dec, 2020 @ 6:45am

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Unlocked 1 Jan, 2021 @ 8:38am

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Unlocked 8 Jan, 2021 @ 9:12am

Convection Refinement

Ruin the microwave casserole.
Unlocked 27 Dec, 2020 @ 9:52am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked 26 Dec, 2021 @ 4:19am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked 8 Jan, 2021 @ 1:41pm

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked 27 Dec, 2020 @ 10:18am

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked 26 Jan, 2021 @ 2:19pm

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked 9 Jan, 2021 @ 2:25am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked 7 Jan, 2021 @ 1:17pm

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Unlocked 27 Jan, 2021 @ 1:10am

Quantum Capacitance

Overcharge it anyway.
Unlocked 7 Jan, 2021 @ 1:12pm

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked 23 Dec, 2021 @ 1:58am

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Unlocked 22 Jan, 2021 @ 7:42am

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Unlocked 23 Dec, 2021 @ 2:03am

Universal Gravitation

Get killed by your own Snarks.
Unlocked 24 Dec, 2021 @ 1:50pm

Our Brains And Your Brawn

Assemble all the possible Scientists and Guards at the end of Office Complex.
Unlocked 19 Dec, 2021 @ 2:08pm

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Unlocked 22 Jan, 2021 @ 7:39am

Laser Immunization

Complete Interloper without taking any laser damage.
Unlocked 22 Jan, 2021 @ 4:16am

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unlocked 15 Jan, 2021 @ 1:09pm

Limitless Potential

Accept G-Man’s offer of employment.
Unlocked 22 Jan, 2021 @ 5:10am

Rather an Anticlimax

Decline G-Man’s offer of employment.
Unlocked 22 Jan, 2021 @ 5:01am

Well-Done

Cook a Grenade for too long.
Unlocked 8 Jan, 2021 @ 9:03am



Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.

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.

Kinetic Repulsion

Kill a Marine with their own Grenade.

Mega Hertz

Kill 5 Enemies with one Grenade.

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.

Rare Specimen

Send the Hidden Hat to Xen.

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​​.

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.

Orbital Trajectory

Skip the opening Xen island with a secret jump.​

Doctor’s Signature

Deliver the finishing blow to Gonarch with your Crowbar.

Gonad Glider

Get whacked into oblivion in the ledge fight.

Post-Mortem Interval

Find each member of the missing research teams.

Black Mesa Decathlon Winner

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

Specimen GG

Take out all three Healing Crystals in Nihilanth’s Chamber at the same time​.

Late for Work

Defeat Nihilanth in under 4 minutes.​
+7

7 hidden achievements remaining

Details for each achievement will be revealed once unlocked