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7 of 25 (28%) achievements earned:

Personal Achievements
Unlocked Feb 17 @ 2:30am

Brownian Motion

Pass the toilet paper to the scientist in need.
Unlocked Feb 19 @ 6:40am

Caffeine Extraction

Perform surgical caffeine extraction from 20 machines.
Unlocked Feb 19 @ 5:43am

Calculated Trajectory

Kill 10 Airborne Headcrabs using the Shotgun.
Unlocked Feb 17 @ 2:23am

Convection Refinement

Ruin the microwave casserole.
Unlocked Feb 19 @ 6:44am

Gray Matter Propulsion

Headshot 20 enemies with the .357 magnum.
Unlocked Feb 17 @ 5:56am

Inflammatory Actions

Kill a Headcrab using fire.
Unlocked Feb 25 @ 2:25am

Prophylactic Suggested

Get overtaken by a Headcrab's ample anterior.

Centripetal Attraction

Kill 20 enemies with the Hivehand.

Dead Reckoning

Kill an Assassin with the .357 Magnum.

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.

Mega Hertz

Kill 5 enemies with one grenade.

Nuclear Fishin'

Kill an Icthyosaur with either the Tau or Gluon.

Permeable Infrastructure

Use the alternate path in Office Complex.

Premature Expulsion

Use an entire clip of Gluon ammo in one continuous shot.

Proverbial Tinkerer

Interfere with the alarm and laptop in Anomalous Materials.

Quantum Capacitance

Overcharge it anyway.

Rare Specimen

Send the Hidden Hat to Xen.

Remote Detonation

Kill a Barnacle with a Satchel.

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.