Playtime past 2 weeks:
0h

View global achievement stats
You must be logged in to compare these stats to your own
30 of 50 (60%) achievements earned:
Personal Achievements
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Unlocked 14 Apr, 2021 @ 3:23pm

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked 15 Jul, 2021 @ 2:46pm

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Unlocked 16 Jul, 2021 @ 11:00am

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Unlocked 19 Aug, 2021 @ 1:17pm

Convection Refinement

Ruin the microwave casserole.
Unlocked 14 Sep, 2023 @ 7:09pm

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked 18 Aug, 2021 @ 12:19pm

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Unlocked 28 May, 2022 @ 11:17pm

Futile Resistance

Kill 10 Enemies with Snarks.
Unlocked 30 Dec, 2021 @ 4:25pm

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked 15 Apr, 2021 @ 12:03pm

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Unlocked 29 May, 2022 @ 12:18pm

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked 20 Jul, 2021 @ 11:46am

Mega Hertz

Kill 5 Enemies with one Grenade.
Unlocked 15 Jul, 2021 @ 9:25am

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Unlocked 16 Jul, 2021 @ 11:07am

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked 15 Jul, 2021 @ 9:23am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked 15 Apr, 2021 @ 3:40pm

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked 16 Aug, 2021 @ 9:22pm

Quantum Capacitance

Overcharge it anyway.
Unlocked 28 May, 2022 @ 7:19pm

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked 28 May, 2022 @ 5:48pm

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Unlocked 17 Jul, 2021 @ 9:43am

Universal Gravitation

Get killed by your own Snarks.
Unlocked 28 May, 2022 @ 10:54pm

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Unlocked 17 Jul, 2021 @ 12:25pm

One Step Ahead

Kill 10 Enemies with Tripmines​​.
Unlocked 19 Aug, 2021 @ 1:28pm

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.
Unlocked 14 Apr, 2021 @ 9:47pm

Our Brains And Your Brawn

Assemble all the possible Scientists and Guards at the end of Office Complex.
Unlocked 28 May, 2022 @ 5:22pm

Doctor’s Signature

Deliver the finishing blow to Gonarch with your Crowbar.
Unlocked 15 Apr, 2021 @ 4:18pm

Black Mesa Decathlon Winner

Escape the Gargantua’s Lair without taking any damage from Gargantuas.
Unlocked 9 May, 2022 @ 2:16pm

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unlocked 15 Apr, 2021 @ 4:26pm

Late for Work

Defeat Nihilanth in under 4 minutes.​
Unlocked 17 Jul, 2021 @ 1:26pm

Limitless Potential

Accept G-Man’s offer of employment.
Unlocked 16 Apr, 2021 @ 8:20am

Well-Done

Cook a Grenade for too long.
Unlocked 28 May, 2022 @ 5:29pm



Ethically Questionable

Conduct all of the questionable research experiments.

Kinetic Repulsion

Kill a Marine with their own Grenade.

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.

Rare Specimen

Send the Hidden Hat to Xen.

Resonance Procrastinator

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

Prolific Popper

Kill all Protozoans in the Borderworld.

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.

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.

Specimen GG

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

Rather an Anticlimax

Decline G-Man’s offer of employment.
+7

7 hidden achievements remaining

Details for each achievement will be revealed once unlocked