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33 av 50 (66%) prestationer uppnådda:
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Brownian Motion

Pass the toilet paper to the Scientist in need.
Upplåst 23 apr, 2024 @ 0:27

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Upplåst 22 okt, 2024 @ 0:43

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.
Upplåst 21 okt, 2024 @ 23:47

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Upplåst 22 okt, 2024 @ 2:20

Convection Refinement

Ruin the microwave casserole.
Upplåst 23 apr, 2024 @ 0:26

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Upplåst 22 okt, 2024 @ 2:12

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Upplåst 22 okt, 2024 @ 4:58

Ethically Questionable

Conduct all of the questionable research experiments.
Upplåst 21 okt, 2024 @ 23:02

Futile Resistance

Kill 10 Enemies with Snarks.
Upplåst 21 okt, 2024 @ 0:10

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Upplåst 21 okt, 2024 @ 2:40

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Upplåst 22 okt, 2024 @ 2:26

Inflammatory Actions

Kill a Headcrab using fire.
Upplåst 19 okt, 2024 @ 12:38

Kinetic Repulsion

Kill a Marine with their own Grenade.
Upplåst 22 okt, 2024 @ 5:01

Mega Hertz

Kill 5 Enemies with one Grenade.
Upplåst 21 okt, 2024 @ 4:03

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.
Upplåst 17 okt, 2024 @ 23:16

Permeable Infrastructure

Use the alternate path in Office Complex.
Upplåst 13 okt, 2024 @ 23:13

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Upplåst 17 okt, 2024 @ 22:38

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Upplåst 4 okt, 2024 @ 1:54

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Upplåst 13 okt, 2024 @ 22:20

Quantum Capacitance

Overcharge it anyway.
Upplåst 21 okt, 2024 @ 2:46

Remote Detonation

Kill a Barnacle with a Satchel.
Upplåst 16 okt, 2024 @ 23:13

Resonance Procrastinator

Refuse to insert the specimen into the Anti-Mass Spectrometer.
Upplåst 13 okt, 2024 @ 22:28

Unified Coupling Theorum

Help the Barnacle and Headcrab find true love.
Upplåst 22 okt, 2024 @ 5:11

Universal Gravitation

Get killed by your own Snarks.
Upplåst 21 okt, 2024 @ 2:51

One Step Ahead

Kill 10 Enemies with Tripmines​​.
Upplåst 22 okt, 2024 @ 4:30

Our Brains And Your Brawn

Assemble all the possible Scientists and Guards at the end of Office Complex.
Upplåst 22 okt, 2024 @ 1:24

Less Than Desirable Consequences

Die in the AMS Beam before starting the experiment.
Upplåst 21 okt, 2024 @ 2:22

Orbital Trajectory

Skip the opening Xen island with a secret jump.​
Upplåst 21 okt, 2024 @ 4:51

Specimen GG

Take out all three Healing Crystals in Nihilanth’s Chamber at the same time​.
Upplåst 22 okt, 2024 @ 0:36

Late for Work

Defeat Nihilanth in under 4 minutes.​
Upplåst 21 okt, 2024 @ 22:34

Limitless Potential

Accept G-Man’s offer of employment.
Upplåst 17 okt, 2024 @ 22:50

Rather an Anticlimax

Decline G-Man’s offer of employment.
Upplåst 17 okt, 2024 @ 22:49

Well-Done

Cook a Grenade for too long.
Upplåst 16 okt, 2024 @ 23:07



Rare Specimen

Send the Hidden Hat to Xen.

Prolific Popper

Kill all Protozoans in the Borderworld.

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.

Stealth Technology

Escape the Hangar in Surface Tension without alerting the Soldiers.

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.

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
+7

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