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

Brownian Motion

Pass the toilet paper to the Scientist in need.
Unlocked 11 Jan, 2024 @ 11:48pm

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Unlocked 12 Jan, 2024 @ 1:47am

Convection Refinement

Ruin the microwave casserole.
Unlocked 11 Jan, 2024 @ 11:46pm

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked 14 Jan, 2024 @ 2:04am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Unlocked 14 Jan, 2024 @ 12:31am

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked 4 Feb, 2024 @ 2:23pm

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Unlocked 3 Feb, 2024 @ 12:00pm

Permeable Infrastructure

Use the alternate path in Office Complex.
Unlocked 12 Jan, 2024 @ 1:45am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked 4 Feb, 2024 @ 5:25pm

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked 14 Jan, 2024 @ 2:04am

Quantum Capacitance

Overcharge it anyway.
Unlocked 3 Feb, 2024 @ 1:45pm

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked 4 Feb, 2024 @ 2:48pm

Universal Gravitation

Get killed by your own Snarks.
Unlocked 3 Feb, 2024 @ 1:20am

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Unlocked 4 Feb, 2024 @ 9:09pm

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Unlocked 12 Jan, 2024 @ 12:05am

Orbital Trajectory

Skip the opening Xen island with a secret jump.​
Unlocked 4 Feb, 2024 @ 2:05pm

Doctor’s Signature

Deliver the finishing blow to Gonarch with your Crowbar.
Unlocked 4 Feb, 2024 @ 5:42pm

Contest Propellant

Find the snack supply canister.
Unlocked 4 Feb, 2024 @ 5:55pm

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unlocked 4 Feb, 2024 @ 5:54pm

Specimen GG

Take out all three Healing Crystals in Nihilanth’s Chamber at the same time​.
Unlocked 4 Feb, 2024 @ 9:37pm

Limitless Potential

Accept G-Man’s offer of employment.
Unlocked 4 Feb, 2024 @ 9:48pm

Rather an Anticlimax

Decline G-Man’s offer of employment.
Unlocked 4 Feb, 2024 @ 9:47pm

Well-Done

Cook a Grenade for too long.
Unlocked 14 Jan, 2024 @ 12:28am



Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.

Centripetal Attraction

Kill 20 Enemies with the Hivehand.

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.

Ethically Questionable

Conduct all of the questionable research experiments.

Futile Resistance

Kill 10 Enemies with Snarks.

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.

Kinetic Repulsion

Kill a Marine with their own Grenade.

Mega Hertz

Kill 5 Enemies with one 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.

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.

Prolific Popper

Kill all Protozoans 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.

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.

Late for Work

Defeat Nihilanth in under 4 minutes.​
+6

6 hidden achievements remaining

Details for each achievement will be revealed once unlocked