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23 of 50 (46%) achievements earned:
Personal Achievements
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Unlocked 27 Jan, 2020 @ 10:53am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked 28 Jan, 2020 @ 8:16am

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Unlocked 2 Feb, 2020 @ 7:34pm

Convection Refinement

Ruin the microwave casserole.
Unlocked 27 Jan, 2020 @ 10:50am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked 18 Dec @ 9:13pm

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Unlocked 28 Jan, 2020 @ 7:18am

Ethically Questionable

Conduct all of the questionable research experiments.
Unlocked 30 Jan, 2020 @ 5:39pm

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked 28 Jan, 2020 @ 9:55am

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked 27 Jan, 2020 @ 9:02pm

Kinetic Repulsion

Kill a Marine with their own Grenade.
Unlocked 7 Feb, 2020 @ 6:38pm

Mega Hertz

Kill 5 Enemies with one Grenade.
Unlocked 7 Feb, 2020 @ 6:35pm

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked 7 Feb, 2020 @ 5:43pm

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked 1 Feb, 2020 @ 10:08am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked 29 Jan, 2020 @ 8:42pm

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Unlocked 27 Jan, 2020 @ 10:45am

Quantum Capacitance

Overcharge it anyway.
Unlocked 2 Feb, 2020 @ 1:40pm

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked 3 Feb, 2020 @ 10:50am

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Unlocked 7 Feb, 2020 @ 10:23am

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Unlocked 2 Feb, 2020 @ 8:10pm

Universal Gravitation

Get killed by your own Snarks.
Unlocked 4 Feb, 2020 @ 8:49pm

Our Brains And Your Brawn

Assemble all the possible Scientists and Guards at the end of Office Complex.
Unlocked 14 Dec @ 10:03pm

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unlocked 3 Feb, 2020 @ 11:46am

Well-Done

Cook a Grenade for too long.
Unlocked 18 Dec @ 8:47pm



Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.

Futile Resistance

Kill 10 Enemies with Snarks.

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.

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.

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.
+7

7 hidden achievements remaining

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