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Đạt được 18 trên 50 (36%) thành tựu:
Thành tựu cá nhân
 

Brownian Motion

Pass the toilet paper to the Scientist in need.
Mở khóa vào 13 Thg06, 2015 @ 6:23am

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Mở khóa vào 15 Thg06, 2015 @ 9:30am

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Mở khóa vào 26 Thg06, 2015 @ 11:39am

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Mở khóa vào 6 Thg05, 2021 @ 2:21pm

Convection Refinement

Ruin the microwave casserole.
Mở khóa vào 13 Thg06, 2015 @ 6:19am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Mở khóa vào 1 Thg07, 2015 @ 6:16am

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Mở khóa vào 2 Thg07, 2015 @ 1:38pm

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Mở khóa vào 7 Thg07, 2015 @ 11:26am

Mega Hertz

Kill 5 Enemies with one Grenade.
Mở khóa vào 16 Thg01, 2020 @ 10:51am

Permeable Infrastructure

Use the alternate path in Office Complex.
Mở khóa vào 15 Thg06, 2015 @ 8:45am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Mở khóa vào 19 Thg05, 2021 @ 11:57am

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Mở khóa vào 13 Thg06, 2015 @ 6:05am

Quantum Capacitance

Overcharge it anyway.
Mở khóa vào 11 Thg07, 2015 @ 6:49am

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Mở khóa vào 19 Thg05, 2021 @ 11:50am

Contest Propellant

Find the snack supply canister.
Mở khóa vào 19 Thg05, 2021 @ 9:53am

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Mở khóa vào 7 Thg05, 2021 @ 1:45pm

Limitless Potential

Accept G-Man’s offer of employment.
Mở khóa vào 20 Thg05, 2021 @ 1:23pm

Rather an Anticlimax

Decline G-Man’s offer of employment.
Mở khóa vào 20 Thg05, 2021 @ 1:18pm



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.

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.

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.

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.

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.
+6

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