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Đạt được 24 trên 50 (48%) thành tựu:
Thành tựu cá nhân
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Mở khóa vào 14 Thg04, 2020 @ 8:23am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Mở khóa vào 14 Thg04, 2020 @ 12:09pm

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Mở khóa vào 15 Thg04, 2020 @ 6:35am

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Mở khóa vào 16 Thg04, 2020 @ 1:47pm

Convection Refinement

Ruin the microwave casserole.
Mở khóa vào 14 Thg04, 2020 @ 8:22am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Mở khóa vào 15 Thg04, 2020 @ 5:12pm

Ethically Questionable

Conduct all of the questionable research experiments.
Mở khóa vào 16 Thg04, 2020 @ 7:09am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Mở khóa vào 15 Thg04, 2020 @ 8:21am

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Mở khóa vào 17 Thg04, 2020 @ 5:17am

Inflammatory Actions

Kill a Headcrab using fire.
Mở khóa vào 18 Thg04, 2020 @ 7:22pm

Mega Hertz

Kill 5 Enemies with one Grenade.
Mở khóa vào 16 Thg04, 2020 @ 8:24am

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Mở khóa vào 17 Thg04, 2020 @ 6:35pm

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Mở khóa vào 17 Thg04, 2020 @ 5:14am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Mở khóa vào 14 Thg04, 2020 @ 11:28am

Quantum Capacitance

Overcharge it anyway.
Mở khóa vào 16 Thg04, 2020 @ 7:06am

Remote Detonation

Kill a Barnacle with a Satchel.
Mở khóa vào 15 Thg04, 2020 @ 4:00pm

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Mở khóa vào 14 Thg04, 2020 @ 8:37am

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Mở khóa vào 1 Thg05, 2020 @ 10:37pm

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.
Mở khóa vào 16 Thg04, 2020 @ 2:12pm

Contest Propellant

Find the snack supply canister.
Mở khóa vào 27 Thg04, 2020 @ 12:08pm

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Mở khóa vào 27 Thg04, 2020 @ 12:06pm

Limitless Potential

Accept G-Man’s offer of employment.
Mở khóa vào 2 Thg05, 2020 @ 11:07am

Rather an Anticlimax

Decline G-Man’s offer of employment.
Mở khóa vào 2 Thg05, 2020 @ 11:07am

Well-Done

Cook a Grenade for too long.
Mở khóa vào 14 Thg04, 2020 @ 9:05am



Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.

Futile Resistance

Kill 10 Enemies with Snarks.

Kinetic Repulsion

Kill a Marine with their own Grenade.

Permeable Infrastructure

Use the alternate path in Office Complex.

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.

Rare Specimen

Send the Hidden Hat to Xen.

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​​.

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.​
+6

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