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Đạt được 21 trên 50 (42%) thành tựu:
Thành tựu cá nhân
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Mở khóa vào 29 Thg12, 2017 @ 10:14am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Mở khóa vào 3 Thg11, 2018 @ 12:46pm

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Mở khóa vào 18 Thg03, 2020 @ 1:59pm

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Mở khóa vào 31 Thg12, 2017 @ 10:04am

Convection Refinement

Ruin the microwave casserole.
Mở khóa vào 29 Thg12, 2017 @ 10:13am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Mở khóa vào 30 Thg12, 2017 @ 12:09pm

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Mở khóa vào 30 Thg12, 2017 @ 7:11am

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Mở khóa vào 2 Thg04, 2020 @ 8:27am

Mega Hertz

Kill 5 Enemies with one Grenade.
Mở khóa vào 19 Thg03, 2020 @ 7:22am

Permeable Infrastructure

Use the alternate path in Office Complex.
Mở khóa vào 3 Thg11, 2018 @ 12:43pm

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Mở khóa vào 8 Thg10, 2019 @ 1:51pm

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Mở khóa vào 22 Thg05, 2020 @ 4:13pm

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Mở khóa vào 22 Thg05, 2020 @ 3:52pm

Rare Specimen

Send the Hidden Hat to Xen.
Mở khóa vào 3 Thg04, 2020 @ 4:25am

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Mở khóa vào 29 Thg12, 2017 @ 10:21am

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Mở khóa vào 10 Thg04, 2020 @ 7:54am

Universal Gravitation

Get killed by your own Snarks.
Mở khóa vào 2 Thg04, 2020 @ 8:07am

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Mở khóa vào 22 Thg05, 2020 @ 4:07pm

Orbital Trajectory

Skip the opening Xen island with a secret jump.​
Mở khóa vào 3 Thg04, 2020 @ 9:22am

Limitless Potential

Accept G-Man’s offer of employment.
Mở khóa vào 6 Thg03, 2020 @ 2:53pm

Rather an Anticlimax

Decline G-Man’s offer of employment.
Mở khóa vào 6 Thg03, 2020 @ 2:56pm



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.

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.

Quantum Capacitance

Overcharge it anyway.

Remote Detonation

Kill a Barnacle with a Satchel.

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.

Our Brains And Your Brawn

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

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.​

Well-Done

Cook a Grenade for too long.
+7

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