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Đạt được 18 trên 50 (36%) thành tựu:
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Brownian Motion

Pass the toilet paper to the Scientist in need.
Mở khóa vào 8 Thg05, 2015 @ 1:22pm

Convection Refinement

Ruin the microwave casserole.
Mở khóa vào 8 Thg05, 2015 @ 1:21pm

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Mở khóa vào 1 Thg08, 2021 @ 12:29pm

Futile Resistance

Kill 10 Enemies with Snarks.
Mở khóa vào 14 Thg12, 2019 @ 7:20am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Mở khóa vào 9 Thg05, 2015 @ 1:31am

Mega Hertz

Kill 5 Enemies with one Grenade.
Mở khóa vào 2 Thg08, 2021 @ 4:35am

Permeable Infrastructure

Use the alternate path in Office Complex.
Mở khóa vào 9 Thg05, 2015 @ 12:49am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Mở khóa vào 14 Thg12, 2019 @ 8:58am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Mở khóa vào 30 Thg05, 2015 @ 11:35am

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Mở khóa vào 8 Thg05, 2015 @ 1:20pm

Quantum Capacitance

Overcharge it anyway.
Mở khóa vào 1 Thg08, 2021 @ 7:08am

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Mở khóa vào 30 Thg05, 2015 @ 1:49pm

Universal Gravitation

Get killed by your own Snarks.
Mở khóa vào 15 Thg05, 2015 @ 12:39pm

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Mở khóa vào 2 Thg08, 2021 @ 5:46am

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.
Mở khóa vào 1 Thg08, 2021 @ 10:05am

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Mở khóa vào 2 Thg08, 2021 @ 4:47am

Limitless Potential

Accept G-Man’s offer of employment.
Mở khóa vào 2 Thg08, 2021 @ 6:43am

Rather an Anticlimax

Decline G-Man’s offer of employment.
Mở khóa vào 2 Thg08, 2021 @ 6:41am



Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.

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.

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.

Inflammatory Actions

Kill a Headcrab using fire.

Kinetic Repulsion

Kill a Marine with their own Grenade.

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.

Rare Specimen

Send the Hidden Hat to Xen.

Remote Detonation

Kill a Barnacle with a Satchel.

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​​.

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.​

Well-Done

Cook a Grenade for too long.
+7

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