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Đạt được 28 trên 50 (56%) thành tựu:
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Brownian Motion

Pass the toilet paper to the Scientist in need.
Mở khóa vào 8 Thg02, 2022 @ 4:32pm

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Mở khóa vào 16 Thg02, 2022 @ 3:34pm

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Mở khóa vào 12 Thg02 @ 6:52pm

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Mở khóa vào 6 Thg11, 2021 @ 5:39am

Convection Refinement

Ruin the microwave casserole.
Mở khóa vào 10 Thg01, 2023 @ 11:05pm

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Mở khóa vào 31 Thg10, 2021 @ 5:37pm

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Mở khóa vào 11 Thg01, 2023 @ 7:31pm

Inflammatory Actions

Kill a Headcrab using fire.
Mở khóa vào 8 Thg02, 2022 @ 5:10pm

Kinetic Repulsion

Kill a Marine with their own Grenade.
Mở khóa vào 12 Thg02 @ 7:58pm

Mega Hertz

Kill 5 Enemies with one Grenade.
Mở khóa vào 31 Thg10, 2021 @ 2:13pm

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Mở khóa vào 23 Thg02, 2022 @ 8:16am

Permeable Infrastructure

Use the alternate path in Office Complex.
Mở khóa vào 12 Thg02 @ 5:20pm

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Mở khóa vào 23 Thg02, 2022 @ 11:50am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Mở khóa vào 28 Thg02 @ 8:34pm

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Mở khóa vào 28 Thg02 @ 8:24pm

Quantum Capacitance

Overcharge it anyway.
Mở khóa vào 11 Thg01, 2023 @ 4:22pm

Remote Detonation

Kill a Barnacle with a Satchel.
Mở khóa vào 12 Thg02 @ 6:54pm

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Mở khóa vào 11 Thg02 @ 12:20am

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Mở khóa vào 22 Thg02, 2022 @ 9:52pm

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Mở khóa vào 23 Thg02, 2022 @ 11:20am

One Step Ahead

Kill 10 Enemies with Tripmines​​.
Mở khóa vào 16 Thg02, 2022 @ 4:58pm

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.
Mở khóa vào 11 Thg01, 2023 @ 6:23pm

Our Brains And Your Brawn

Assemble all the possible Scientists and Guards at the end of Office Complex.
Mở khóa vào 28 Thg02 @ 9:31pm

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Mở khóa vào 11 Thg02 @ 12:23am

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Mở khóa vào 8 Thg11, 2021 @ 8:57pm

Limitless Potential

Accept G-Man’s offer of employment.
Mở khóa vào 23 Thg02, 2022 @ 12:19pm

Rather an Anticlimax

Decline G-Man’s offer of employment.
Mở khóa vào 23 Thg02, 2022 @ 12:18pm

Well-Done

Cook a Grenade for too long.
Mở khóa vào 28 Thg02 @ 8:45pm



Dead Reckoning

Kill an Assassin with the .357 Magnum.

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.

Rare Specimen

Send the Hidden Hat to Xen.

Universal Gravitation

Get killed by your own Snarks.

Prolific Popper

Kill all Protozoans in the Borderworld.

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.​
+7

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