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Brownian Motion

Pass the toilet paper to the Scientist in need.
Здобуто 14 берез. 2020 о 16:50

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Здобуто 16 берез. 2020 о 11:46

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Здобуто 15 берез. 2020 о 15:11

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Здобуто 22 берез. 2020 о 16:56

Convection Refinement

Ruin the microwave casserole.
Здобуто 21 берез. 2020 о 12:18

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Здобуто 16 берез. 2020 о 16:18

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Здобуто 21 берез. 2020 о 12:56

Ethically Questionable

Conduct all of the questionable research experiments.
Здобуто 28 трав. 2020 о 15:20

Futile Resistance

Kill 10 Enemies with Snarks.
Здобуто 21 трав. 2020 о 20:18

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Здобуто 11 берез. 2017 о 17:31

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Здобуто 21 трав. 2020 о 20:45

Inflammatory Actions

Kill a Headcrab using fire.
Здобуто 21 берез. 2020 о 23:42

Kinetic Repulsion

Kill a Marine with their own Grenade.
Здобуто 22 берез. 2020 о 0:15

Mega Hertz

Kill 5 Enemies with one Grenade.
Здобуто 23 трав. 2020 о 0:43

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Здобуто 21 берез. 2020 о 11:51

Permeable Infrastructure

Use the alternate path in Office Complex.
Здобуто 21 берез. 2020 о 23:54

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Здобуто 21 трав. 2020 о 20:41

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Здобуто 17 берез. 2017 о 14:21

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Здобуто 21 берез. 2020 о 13:04

Quantum Capacitance

Overcharge it anyway.
Здобуто 21 трав. 2020 о 20:10

Remote Detonation

Kill a Barnacle with a Satchel.
Здобуто 16 берез. 2020 о 12:21

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Здобуто 21 трав. 2020 о 21:02

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Здобуто 28 трав. 2020 о 14:41

Universal Gravitation

Get killed by your own Snarks.
Здобуто 19 берез. 2020 о 23:17

One Step Ahead

Kill 10 Enemies with Tripmines​​.
Здобуто 22 берез. 2020 о 1:21

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.
Здобуто 22 берез. 2020 о 21:05

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Здобуто 28 трав. 2020 о 14:50

Well-Done

Cook a Grenade for too long.
Здобуто 14 берез. 2020 о 23:17



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.

Our Brains And Your Brawn

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

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

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