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18 of 25 (72%) achievements earned:

Personal Achievements
 
Unlocked Dec 29, 2018 @ 3:44pm

Brownian Motion

Pass the toilet paper to the scientist in need.
Unlocked Dec 29, 2018 @ 3:48pm

Caffeine Extraction

Perform surgical caffeine extraction from 20 machines.
Unlocked Dec 30, 2018 @ 4:51am

Calculated Trajectory

Kill 10 Airborne Headcrabs using the Shotgun.
Unlocked Jan 3 @ 4:28am

Centripetal Attraction

Kill 20 enemies with the Hivehand.
Unlocked Dec 29, 2018 @ 3:43pm

Convection Refinement

Ruin the microwave casserole.
Unlocked Dec 31, 2018 @ 11:51am

Dead Reckoning

Kill an Assassin with the .357 Magnum.
Unlocked Jan 5 @ 3:07am

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.
Unlocked Jan 4 @ 2:45pm

Futile Resistance

Kill 10 enemies with Snarks.
Unlocked Dec 30, 2018 @ 5:16am

Gray Matter Propulsion

Headshot 20 enemies with the .357 magnum.
Unlocked Jan 5 @ 3:27am

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.
Unlocked Jan 3 @ 3:48am

Kinetic Repulsion

Kill a Marine with their own grenade.
Unlocked Dec 30, 2018 @ 1:05pm

Mega Hertz

Kill 5 enemies with one grenade.
Unlocked Jan 5 @ 3:23am

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.
Unlocked Dec 30, 2018 @ 1:05pm

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.
Unlocked Dec 29, 2018 @ 3:42pm

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.
Unlocked Dec 31, 2018 @ 2:28pm

Quantum Capacitance

Overcharge it anyway.
Unlocked Dec 30, 2018 @ 4:48am

Remote Detonation

Kill a Barnacle with a Satchel.
Unlocked Jan 5 @ 2:58am

Universal Gravitation

Get killed by your own Snarks.



Ethically Questionable

Conduct all of the questionable research experiments.

Inflammatory Actions

Kill a Headcrab using fire.

Nuclear Fishin'

Kill an Icthyosaur 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.