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Achieved | Achievement | % of players | Unlock date |
|---|---|---|---|
 | Brownian Motion Pass the toilet paper to the Scientist in need. | 84.96% | 01/10/2023, 18:38:10 |
 | Convection Refinement Ruin the microwave casserole. | 72.82% | 01/10/2023, 18:33:48 |
 | Gray Matter Propulsion Headshot 20 Enemies with the .357 Magnum. | 59.68% | 09/10/2023, 19:18:38 |
 | Prophylactic Suggested Get overtaken by a Headcrab's ample anterior. | 50.41% | 01/10/2023, 19:51:50 |
 | Caffeine Extraction Perform surgical caffeine extraction from 20 vending machines. | 38.73% | 08/10/2023, 13:25:53 |
 | Permeable Infrastructure Use the alternate path in Office Complex. | 30.97% | 08/10/2023, 15:04:08 |
 | Centripetal Attraction Kill 20 Enemies with the Hivehand. | 29.87% | 07/10/2023, 17:45:21 |
 | Proverbial Tinkerer Interfere with the alarm and laptop in Anomalous Materials. | 26.33% | 08/10/2023, 13:23:20 |
 | Inflammatory Actions Kill a Headcrab using fire. | 25.68% | 01/10/2023, 19:13:17 |
 | Quantum Capacitance Overcharge it anyway. | 21.83% | 16/10/2023, 10:49:50 |
 | Dead Reckoning Kill an Assassin with the .357 Magnum. | 20.8% | 09/10/2023, 21:21:31 |
 | Universal Gravitation Get killed by your own Snarks. | 14.54% | 16/10/2023, 10:50:46 |
 | Resonance Procrastinator Refuse to insert the specimen into the Anti-Mass Spectrometer. | 13.98% | 08/10/2023, 13:36:53 |
 | Calculated Trajectory Kill 10 airborne Headcrabs using the Shotgun. | 13.05% | 08/10/2023, 16:22:07 |
 | Remote Detonation Kill a Barnacle with a Satchel. | 12.31% | 08/10/2023, 17:13:18 |
 | Digital Wizardry Kill 10 enemies with a reprogrammed Sentry. | 11.62% | 08/10/2023, 15:51:55 |
 | Mega Hertz Kill 5 Enemies with one Grenade. | 10.96% | 07/10/2023, 18:47:15 |
 | Nuclear Fishin' Kill an Ichthyosaur with either the Tau or Gluon. | 9.97% | 07/10/2023, 17:17:50 |
 | Hyper Saturation Conundrum Drown in Lambda Core's coolant. | 9.38% | 16/10/2023, 19:53:40 |
 | Ethically Questionable Conduct all of the questionable research experiments. | 9.06% | 05/10/2023, 20:20:41 |
 | Futile Resistance Kill 10 Enemies with Snarks. | 8% | 07/10/2023, 14:33:41 |
 | Premature Expulsion Use an entire clip of Gluon ammo in one continuous shot. | 7.97% | 07/10/2023, 20:01:43 |
 | Unified Coupling Theorum Help the Barnacle and Headcrab find true love. | 6.22% | 08/10/2023, 16:18:48 |
 | Kinetic Repulsion Kill a Marine with their own Grenade. | 5.73% | 08/10/2023, 16:03:10 |
 | Rare Specimen Send the Hidden Hat to Xen. | 3.35% | 16/10/2023, 22:26:30 |
 | Rather an Anticlimax Decline G-Man’s offer of employment. | 0% | 08/10/2023, 12:56:32 |
 | Our Brains And Your Brawn Assemble all the possible Scientists and Guards at the end of Office Complex. | 0% | 08/10/2023, 15:38:50 |
 | Prolific Popper Kill all Protozoans in the Borderworld. | 0% | 29/10/2023, 00:21:03 |
 | The Rarest Specimen Carry the Hidden Hat to Endgame. | 0% | 29/10/2023, 16:56:56 |
 | Late for Work Defeat Nihilanth in under 4 minutes. | 0% | 29/10/2023, 16:55:46 |
 | Specimen GG Take out all three Healing Crystals in Nihilanth’s Chamber at the same time. | 0% | 29/10/2023, 16:55:10 |
 | Stealth Technology Escape the Hangar in Surface Tension without alerting the Soldiers. | 0% | 16/10/2023, 15:51:15 |
 | The Plan Use Cyanogen to kill Gonarch. | 0% | 24/10/2023, 21:18:54 |
 | Unquestionably Ethical Don't use the Cyanogen and let the Gonarch live. | 0% | 24/10/2023, 21:20:54 |
 | Well-Done Cook a Grenade for too long. | 0% | 04/10/2023, 20:20:31 |
 | Following the Rules Use the welcome mat. | 0% | 21/10/2023, 18:17:52 |
 | Pepperoni Precipitation View the *other* secret ending. | 0% | |
 | Post-Mortem Interval Find each member of the missing research teams. | 0% | 24/10/2023, 21:16:47 |
 | Gonad Glider Get whacked into oblivion in the ledge fight. | 0% | 21/10/2023, 22:31:15 |
 | Doctor’s Signature Deliver the finishing blow to Gonarch with your Crowbar. | 0% | 24/10/2023, 22:04:41 |
 | Anti-Matter Over Mind Kill a Controller without killing any of its mind-controlled Vortigaunt slaves. | 0% | 07/10/2023, 20:23:06 |
 | Black Mesa Decathlon Winner Escape the Gargantua’s Lair without taking any damage from Gargantuas. | 0% | 28/10/2023, 20:37:31 |
 | Laser Immunization Complete Interloper without taking any laser damage. | 0% | |
 | Less Than Desirable Consequences Die in the AMS Beam before starting the experiment. | 0% | 01/10/2023, 18:51:29 |
 | Limitless Potential Accept G-Man’s offer of employment. | 0% | 08/10/2023, 12:58:08 |
 | One Step Ahead Kill 10 Enemies with Tripmines. | 0% | 09/10/2023, 19:19:39 |
 | Orbital Trajectory Skip the opening Xen island with a secret jump. | 0% | 16/10/2023, 22:35:37 |
 | Contest Propellant Find the snack supply canister. | 0% | 28/10/2023, 19:59:24 |
 | PhD in Pacifism Don't kill any Vortigaunts in the Borderworld. | 0% | 08/10/2023, 12:08:48 |
 | xen when Wait too long to jump into the Lambda Teleporter. | 0% | 16/10/2023, 22:25:42 |