Playtime past 2 weeks:
15.1h

View global achievement stats
You must be logged in to compare these stats to your own
17 of 50 (34%) achievements earned:
Personal Achievements
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Unlocked 25 Dec, 2018 @ 7:01pm

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked 29 Dec, 2018 @ 8:40pm

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Unlocked 18 Apr @ 4:58am

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Unlocked 31 Dec, 2018 @ 7:54am

Convection Refinement

Ruin the microwave casserole.
Unlocked 25 Dec, 2018 @ 6:59pm

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked 30 May, 2023 @ 3:20pm

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Unlocked 26 Apr, 2019 @ 12:16pm

Futile Resistance

Kill 10 Enemies with Snarks.
Unlocked 8 May, 2019 @ 6:41pm

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked 29 Dec, 2018 @ 9:51am

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked 31 Dec, 2019 @ 7:55pm

Mega Hertz

Kill 5 Enemies with one Grenade.
Unlocked 31 Dec, 2019 @ 7:19pm

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Unlocked 31 Dec, 2019 @ 7:12pm

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked 7 Apr @ 8:36am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked 31 Dec, 2019 @ 9:26pm

Quantum Capacitance

Overcharge it anyway.
Unlocked 31 Dec, 2019 @ 9:27pm

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked 23 Apr @ 4:27pm

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unlocked 24 Apr @ 12:36pm



Ethically Questionable

Conduct all of the questionable research experiments.

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.

Kinetic Repulsion

Kill a Marine with their own Grenade.

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.

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.

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.

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.​

Limitless Potential

Accept G-Man’s offer of employment.

Rather an Anticlimax

Decline G-Man’s offer of employment.

Well-Done

Cook a Grenade for too long.
+7

7 hidden achievements remaining

Details for each achievement will be revealed once unlocked