'Brownian Motion' achievement icon Secret achievement icon

Brownian Motion

Pass the toilet paper to the Scientist in need.

Hidden achievement

Details are hidden to users who have not unlocked it.

63.1% of players unlocked this.

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'Caffeine Extraction' achievement icon Secret achievement icon

Caffeine Extraction

Perform surgical caffeine extraction from 20 vending machines.

Hidden achievement

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24.1% of players unlocked this.

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'Calculated Trajectory' achievement icon Secret achievement icon

Calculated Trajectory

Kill 10 airborne Headcrabs using the Shotgun.

Hidden achievement

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14.1% of players unlocked this.

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'Centripetal Attraction' achievement icon Secret achievement icon

Centripetal Attraction

Kill 20 Enemies with the Hivehand.

Hidden achievement

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25% of players unlocked this.

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'Convection Refinement' achievement icon Secret achievement icon

Convection Refinement

Ruin the microwave casserole.

Hidden achievement

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51.2% of players unlocked this.

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'Dead Reckoning' achievement icon Secret achievement icon

Dead Reckoning

Kill an Assassin with the .357 Magnum.

Hidden achievement

Details are hidden to users who have not unlocked it.

23% of players unlocked this.

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'Digital Wizardry' achievement icon Secret achievement icon

Digital Wizardry

Kill 10 enemies with a reprogrammed Sentry.

Hidden achievement

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9.5% of players unlocked this.

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'Ethically Questionable' achievement icon Secret achievement icon

Ethically Questionable

Conduct all of the questionable research experiments.

Hidden achievement

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5.8% of players unlocked this.

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'Futile Resistance' achievement icon Secret achievement icon

Futile Resistance

Kill 10 Enemies with Snarks.

Hidden achievement

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7.3% of players unlocked this.

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'Gray Matter Propulsion' achievement icon Secret achievement icon

Gray Matter Propulsion

Headshot 20 Enemies with the .357 Magnum.

Hidden achievement

Details are hidden to users who have not unlocked it.

40.1% of players unlocked this.

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'Hyper Saturation Conundrum' achievement icon Secret achievement icon

Hyper Saturation Conundrum

Drown in Lambda Core's coolant.

Hidden achievement

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6.5% of players unlocked this.

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'Inflammatory Actions' achievement icon Secret achievement icon

Inflammatory Actions

Kill a Headcrab using fire.

Hidden achievement

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25.1% of players unlocked this.

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'Kinetic Repulsion' achievement icon Secret achievement icon

Kinetic Repulsion

Kill a Marine with their own Grenade.

Hidden achievement

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5.8% of players unlocked this.

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'Mega Hertz' achievement icon Secret achievement icon

Mega Hertz

Kill 5 Enemies with one Grenade.

Hidden achievement

Details are hidden to users who have not unlocked it.

18.8% of players unlocked this.

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'Nuclear Fishin'' achievement icon Secret achievement icon

Nuclear Fishin'

Kill an Ichthyosaur with either the Tau or Gluon.

Hidden achievement

Details are hidden to users who have not unlocked it.

12.4% of players unlocked this.

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'Permeable Infrastructure' achievement icon Secret achievement icon

Permeable Infrastructure

Use the alternate path in Office Complex.

Hidden achievement

Details are hidden to users who have not unlocked it.

24.3% of players unlocked this.

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