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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 18 maj, 2015 @ 7:55

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Upplåst 4 jan, 2016 @ 6:51

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Upplåst 17 mar, 2018 @ 16:31

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Upplåst 31 jan, 2016 @ 15:06

Convection Refinement

Ruin the microwave casserole.
Upplåst 18 maj, 2015 @ 7:54

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Upplåst 31 jan, 2016 @ 6:50

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Upplåst 30 jan, 2016 @ 10:26

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Upplåst 17 mar, 2018 @ 16:38

Inflammatory Actions

Kill a Headcrab using fire.
Upplåst 17 mar, 2018 @ 16:09

Mega Hertz

Kill 5 Enemies with one Grenade.
Upplåst 7 apr, 2020 @ 15:01

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Upplåst 17 mar, 2018 @ 15:59

Permeable Infrastructure

Use the alternate path in Office Complex.
Upplåst 4 jan, 2016 @ 6:39

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Upplåst 31 jan, 2016 @ 15:01

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Upplåst 29 maj, 2015 @ 13:14

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Upplåst 29 maj, 2015 @ 12:52

Quantum Capacitance

Overcharge it anyway.
Upplåst 31 jan, 2016 @ 15:00

Remote Detonation

Kill a Barnacle with a Satchel.
Upplåst 6 feb, 2016 @ 5:48

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Upplåst 17 mar, 2018 @ 14:01

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Upplåst 17 mar, 2018 @ 16:19

Universal Gravitation

Get killed by your own Snarks.
Upplåst 1 feb, 2016 @ 12:57

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Upplåst 10 apr, 2020 @ 14:12

Contest Propellant

Find the snack supply canister.
Upplåst 10 apr, 2020 @ 12:21

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Upplåst 10 apr, 2020 @ 12:18

Late for Work

Defeat Nihilanth in under 4 minutes.​
Upplåst 11 apr, 2020 @ 3:32

Limitless Potential

Accept G-Man’s offer of employment.
Upplåst 10 apr, 2020 @ 14:51

Rather an Anticlimax

Decline G-Man’s offer of employment.
Upplåst 10 apr, 2020 @ 14:50



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.

Kinetic Repulsion

Kill a Marine with their own Grenade.

Rare Specimen

Send the Hidden Hat to Xen.

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​.

Well-Done

Cook a Grenade for too long.
+6

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