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26 av 50 (52%) prestationer uppnådda:
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Brownian Motion

Pass the toilet paper to the Scientist in need.
Upplåst 10 maj, 2015 @ 11:25

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Upplåst 21 jan, 2021 @ 14:48

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Upplåst 22 jan, 2021 @ 12:58

Convection Refinement

Ruin the microwave casserole.
Upplåst 10 maj, 2015 @ 11:23

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Upplåst 22 jan, 2021 @ 3:25

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Upplåst 1 aug, 2015 @ 16:42

Inflammatory Actions

Kill a Headcrab using fire.
Upplåst 2 feb, 2021 @ 16:13

Mega Hertz

Kill 5 Enemies with one Grenade.
Upplåst 4 feb, 2021 @ 9:56

Permeable Infrastructure

Use the alternate path in Office Complex.
Upplåst 2 feb, 2021 @ 16:22

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Upplåst 22 jan, 2021 @ 12:45

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Upplåst 10 maj, 2015 @ 14:27

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Upplåst 10 maj, 2015 @ 11:14

Quantum Capacitance

Overcharge it anyway.
Upplåst 20 dec, 2015 @ 17:50

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Upplåst 10 maj, 2015 @ 11:43

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Upplåst 14 dec, 2021 @ 15:38

Universal Gravitation

Get killed by your own Snarks.
Upplåst 10 jan, 2016 @ 12:18

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Upplåst 22 jan, 2021 @ 17:36

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.
Upplåst 21 jan, 2021 @ 19:29

xen when

Wait too long to jump into the Lambda Teleporter.
Upplåst 31 jan, 2021 @ 19:37

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Upplåst 4 feb, 2021 @ 9:11

Following the Rules

Use the welcome mat.
Upplåst 14 dec, 2021 @ 15:17

Gonad Glider

Get whacked into oblivion in the ledge fight.
Upplåst 14 dec, 2021 @ 16:23

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Upplåst 22 jan, 2021 @ 15:59

Limitless Potential

Accept G-Man’s offer of employment.
Upplåst 22 jan, 2021 @ 18:10

Rather an Anticlimax

Decline G-Man’s offer of employment.
Upplåst 22 jan, 2021 @ 18:11

Well-Done

Cook a Grenade for too long.
Upplåst 22 jan, 2021 @ 14:46



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.

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.

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.

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.

Orbital Trajectory

Skip the opening Xen island with a secret jump.​

Doctor’s Signature

Deliver the finishing blow to Gonarch with your Crowbar.

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.​
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