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Brownian Motion

Pass the toilet paper to the Scientist in need.
Ξεκλειδώθηκε στις 7 Ιουλ 2017, 8:24

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.
Ξεκλειδώθηκε στις 8 Ιουλ 2017, 11:21

Centripetal Attraction

Kill 20 Enemies with the Hivehand.
Ξεκλειδώθηκε στις 18 Μαρ 2019, 16:57

Convection Refinement

Ruin the microwave casserole.
Ξεκλειδώθηκε στις 7 Ιουλ 2017, 8:23

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Ξεκλειδώθηκε στις 18 Μαρ 2019, 15:52

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.
Ξεκλειδώθηκε στις 8 Ιουλ 2017, 11:44

Mega Hertz

Kill 5 Enemies with one Grenade.
Ξεκλειδώθηκε στις 11 Ιουν 2020, 21:07

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Ξεκλειδώθηκε στις 18 Απρ 2021, 19:29

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Ξεκλειδώθηκε στις 15 Σεπ 2017, 20:52

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Ξεκλειδώθηκε στις 7 Ιουλ 2017, 8:22

Quantum Capacitance

Overcharge it anyway.
Ξεκλειδώθηκε στις 19 Σεπ 2017, 20:28

Remote Detonation

Kill a Barnacle with a Satchel.
Ξεκλειδώθηκε στις 11 Ιουν 2020, 20:47

PhD in Pacifism

Don't kill any Vortigaunts in the Borderworld.
Ξεκλειδώθηκε στις 18 Απρ 2021, 19:20

Contest Propellant

Find the snack supply canister.
Ξεκλειδώθηκε στις 16 Απρ 2021, 22:04

Black Mesa Decathlon Winner

Escape the Gargantua’s Lair without taking any damage from Gargantuas.
Ξεκλειδώθηκε στις 18 Απρ 2021, 17:21

Anti-Matter Over Mind

Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Ξεκλειδώθηκε στις 22 Ιουν 2020, 21:44

Limitless Potential

Accept G-Man’s offer of employment.
Ξεκλειδώθηκε στις 31 Ιουλ 2021, 19:01

Rather an Anticlimax

Decline G-Man’s offer of employment.
Ξεκλειδώθηκε στις 31 Ιουλ 2021, 19:06

Well-Done

Cook a Grenade for too long.
Ξεκλειδώθηκε στις 11 Ιουν 2020, 20:10



Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.

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.

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.

Permeable Infrastructure

Use the alternate path in Office Complex.

Rare Specimen

Send the Hidden Hat to Xen.

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.

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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