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Achievements
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Brownian Motion
Pass the toilet paper to the Scientist in need.
61.0% global
Caffeine Extraction
Perform surgical caffeine extraction from 20 vending machines.
21.0% global
Calculated Trajectory
Kill 10 airborne Headcrabs using the Shotgun.
13.4% global
Centripetal Attraction
Kill 20 Enemies with the Hivehand.
22.7% global
Convection Refinement
Ruin the microwave casserole.
50.2% global
Dead Reckoning
Kill an Assassin with the .357 Magnum.
23.0% global
Digital Wizardry
Kill 10 enemies with a reprogrammed Sentry.
8.8% global
Ethically Questionable
Conduct all of the questionable research experiments.
5.3% global
Futile Resistance
Kill 10 Enemies with Snarks.
7.0% global
Gray Matter Propulsion
Headshot 20 Enemies with the .357 Magnum.
36.6% global
Hyper Saturation Conundrum
Drown in Lambda Core's coolant.
5.9% global
Inflammatory Actions
Kill a Headcrab using fire.
25.6% global
Kinetic Repulsion
Kill a Marine with their own Grenade.
6.0% global
Mega Hertz
Kill 5 Enemies with one Grenade.
18.7% global
Nuclear Fishin'
Kill an Ichthyosaur with either the Tau or Gluon.
12.2% global
Permeable Infrastructure
Use the alternate path in Office Complex.
23.3% global
Premature Expulsion
Use an entire clip of Gluon ammo in one continuous shot.
26.4% global
Prophylactic Suggested
Get overtaken by a Headcrab's ample anterior.
33.2% global
Proverbial Tinkerer
Interfere with the alarm and laptop in Anomalous Materials.
16.3% global
Quantum Capacitance
Overcharge it anyway.
18.7% global
Rare Specimen
Send the Hidden Hat to Xen.
2.8% global
Remote Detonation
Kill a Barnacle with a Satchel.
11.2% global
Resonance Procrastinator
Refuse to insert the specimen into the Anti-Mass Spectrometer.
9.5% global
Unified Coupling Theorum
Help the Barnacle and Headcrab find true love.
6.4% global
Universal Gravitation
Get killed by your own Snarks.
10.6% global
Prolific Popper
Kill all Protozoans in the Borderworld.
2.0% global
PhD in Pacifism
Don't kill any Vortigaunts in the Borderworld.
11.7% global
Hidden Achievement
HiddenKeep playing to discover this achievement
2.1% global
One Step Ahead
Kill 10 Enemies with Tripmines.
6.0% global
Stealth Technology
Escape the Hangar in Surface Tension without alerting the Soldiers.
10.7% global
Hidden Achievement
HiddenKeep playing to discover this achievement
4.5% global
Our Brains And Your Brawn
Assemble all the possible Scientists and Guards at the end of Office Complex.
5.2% global
Less Than Desirable Consequences
Die in the AMS Beam before starting the experiment.
15.6% global
Orbital Trajectory
Skip the opening Xen island with a secret jump.
3.8% global
Hidden Achievement
HiddenKeep playing to discover this achievement
3.9% global
Doctor’s Signature
Deliver the finishing blow to Gonarch with your Crowbar.
3.3% global
Gonad Glider
Get whacked into oblivion in the ledge fight.
5.9% global
Post-Mortem Interval
Find each member of the missing research teams.
2.1% global
Hidden Achievement
HiddenKeep playing to discover this achievement
2.5% global
Hidden Achievement
HiddenKeep playing to discover this achievement
2.4% global
Hidden Achievement
HiddenKeep playing to discover this achievement
10.7% global
Laser Immunization
Complete Interloper without taking any laser damage.
2.5% global
Black Mesa Decathlon Winner
Escape the Gargantua’s Lair without taking any damage from Gargantuas.
3.6% global
Anti-Matter Over Mind
Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
27.6% global
Specimen GG
Take out all three Healing Crystals in Nihilanth’s Chamber at the same time.
3.2% global
Late for Work
Defeat Nihilanth in under 4 minutes.
3.3% global
Limitless Potential
Accept G-Man’s offer of employment.
24.9% global
Rather an Anticlimax
Decline G-Man’s offer of employment.
16.5% global
Hidden Achievement
HiddenKeep playing to discover this achievement
2.0% global
Well-Done
Cook a Grenade for too long.
18.8% global
Manuel Raya unlocked Digital Wizardry
Manuel Raya unlocked Brownian Motion
Manuel Raya unlocked Convection Refinement
