Playtime past 2 weeks:
0h

View global achievement stats
You must be logged in to compare these stats to your own
16 of 50 (32%) achievements earned:
Personal Achievements
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Unlocked Jul 15, 2018 @ 7:31am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked Nov 14, 2020 @ 7:37am

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Unlocked May 20 @ 2:54pm

Convection Refinement

Ruin the microwave casserole.
Unlocked Jul 15, 2018 @ 7:30am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked May 30 @ 9:52am

Ethically Questionable

Conduct all of the questionable research experiments.
Unlocked May 30 @ 11:09am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked May 30 @ 11:03am

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked Nov 14, 2020 @ 7:37am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked May 20 @ 1:59pm

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Unlocked May 10 @ 6:14pm

Quantum Capacitance

Overcharge it anyway.
Unlocked May 30 @ 11:07am

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked May 20 @ 2:36pm

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Unlocked May 10 @ 6:30pm

Our Brains And Your Brawn

Assemble all the possible Scientists and Guards at the end of Office Complex.
Unlocked May 10 @ 7:52pm

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Unlocked May 10 @ 6:34pm

Well-Done

Cook a Grenade for too long.
Unlocked Nov 14, 2020 @ 8:20am



Centripetal Attraction

Kill 20 Enemies with the Hivehand.

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.

Futile Resistance

Kill 10 Enemies with Snarks.

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.

Inflammatory Actions

Kill a Headcrab using fire.

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.

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.

Rare Specimen

Send the Hidden Hat to Xen.

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.

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​​.

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.

Laser Immunization

Complete Interloper without taking any laser damage.

Black Mesa Decathlon Winner

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

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.

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.​

Limitless Potential

Accept G-Man’s offer of employment.

Rather an Anticlimax

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

7 hidden achievements remaining

Details for each achievement will be revealed once unlocked