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 28 May, 2018 @ 11:13am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked 28 May, 2018 @ 12:48pm

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Unlocked 31 May, 2018 @ 8:50pm

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Unlocked 4 Jun, 2018 @ 12:52pm

Convection Refinement

Ruin the microwave casserole.
Unlocked 28 May, 2018 @ 11:11am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked 4 Jun, 2018 @ 12:43pm

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Unlocked 10 Jun, 2018 @ 10:59am

Ethically Questionable

Conduct all of the questionable research experiments.
Unlocked 10 Jun, 2018 @ 3:44pm

Futile Resistance

Kill 10 Enemies with Snarks.
Unlocked 4 Jun, 2018 @ 8:36am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked 31 May, 2018 @ 7:25pm

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Unlocked 4 Jun, 2018 @ 1:42pm

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked 12 Jun, 2018 @ 7:25pm

Kinetic Repulsion

Kill a Marine with their own Grenade.
Unlocked 10 Jun, 2018 @ 12:21pm

Mega Hertz

Kill 5 Enemies with one Grenade.
Unlocked 12 Jun, 2018 @ 7:20pm

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Unlocked 31 May, 2018 @ 8:47pm

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked 10 Jun, 2018 @ 10:43am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked 4 Jun, 2018 @ 12:54pm

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked 28 May, 2018 @ 1:05pm

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Unlocked 28 May, 2018 @ 11:09am

Quantum Capacitance

Overcharge it anyway.
Unlocked 10 Jun, 2018 @ 5:19pm

Rare Specimen

Send the Hidden Hat to Xen.
Unlocked 10 Jun, 2018 @ 7:59pm

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked 12 Jun, 2018 @ 7:15pm

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Unlocked 10 Jun, 2018 @ 10:08am

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Unlocked 10 Jun, 2018 @ 7:27pm

Universal Gravitation

Get killed by your own Snarks.
Unlocked 10 Jun, 2018 @ 6:31pm

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unlocked 8 Mar, 2020 @ 1:35am

Limitless Potential

Accept G-Man’s offer of employment.
Unlocked 11 Mar, 2020 @ 2:28pm

Rather an Anticlimax

Decline G-Man’s offer of employment.
Unlocked 11 Mar, 2020 @ 2:27pm



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.

Our Brains And Your Brawn

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

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.

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.

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.​

Well-Done

Cook a Grenade for too long.
+7

7 hidden achievements remaining

Details for each achievement will be revealed once unlocked