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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 27 Thg11, 2021 @ 12:11am

Convection Refinement

Ruin the microwave casserole.
Mở khóa vào 27 Thg11, 2021 @ 12:11am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Mở khóa vào 3 Thg08 @ 8:38am

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Mở khóa vào 27 Thg11, 2021 @ 6:36am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Mở khóa vào 10 Thg08, 2022 @ 1:01pm

Inflammatory Actions

Kill a Headcrab using fire.
Mở khóa vào 27 Thg11, 2021 @ 5:28am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Mở khóa vào 30 Thg07 @ 11:03am

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Mở khóa vào 3 Thg08 @ 8:24am

Quantum Capacitance

Overcharge it anyway.
Mở khóa vào 3 Thg08 @ 8:49am

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Mở khóa vào 3 Thg08 @ 8:29am

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Mở khóa vào 30 Thg07 @ 1:46pm

xen when

Wait too long to jump into the Lambda Teleporter.
Mở khóa vào 3 Thg08 @ 9:21am

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Mở khóa vào 3 Thg08 @ 8:27am

Following the Rules

Use the welcome mat.
Mở khóa vào 27 Thg07 @ 8:52am

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Mở khóa vào 30 Thg07 @ 11:47am

Limitless Potential

Accept G-Man’s offer of employment.
Mở khóa vào 30 Thg07 @ 2:14pm

Rather an Anticlimax

Decline G-Man’s offer of employment.
Mở khóa vào 30 Thg07 @ 2:13pm

Well-Done

Cook a Grenade for too long.
Mở khóa vào 10 Thg08, 2022 @ 12:20pm



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.

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.

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.

Permeable Infrastructure

Use the alternate path in Office Complex.

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.

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.

Universal Gravitation

Get killed by your own Snarks.

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.

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.​
+5

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