| Game |
Achievement |
Points |
Unlocked |
 |
 |
Post-Mortem Interval |
1.53 | 04/18/2021 02:17:55 |
| Find each member of the missing research teams. |
|
 |
Laser Immunization |
1.45 | 04/16/2021 14:49:03 |
| Complete Interloper without taking any laser damage. |
|
 |
Anti-Matter Over Mind |
0.75 | 04/10/2021 03:19:56 |
| Kill a Controller without killing any of its mind-controlled Vortigaunt slaves. |
|
 |
The Rarest Specimen |
1.55 | 03/19/2020 08:13:41 |
| Carry the Hidden Hat to Endgame. |
|
 |
Pepperoni Precipitation |
1.57 | 03/19/2020 08:01:47 |
| View the *other* secret ending. |
|
 |
PhD in Pacifism |
1.01 | 03/19/2020 06:53:33 |
| Don't kill any Vortigaunts in the Borderworld. |
|
 |
Stealth Technology |
1.07 | 03/13/2020 05:30:23 |
| Escape the Hangar in Surface Tension without alerting the Soldiers. |
|
 |
One Step Ahead |
1.21 | 03/09/2020 01:11:47 |
| Kill 10 Enemies with Tripmines. |
|
 |
Contest Propellant |
1.07 | 03/09/2020 00:57:47 |
| Find the snack supply canister. |
|
 |
Our Brains And Your Brawn |
1.25 | 03/08/2020 23:40:04 |
| Assemble all the possible Scientists and Guards at the end of Office Complex. |
|
 |
Following the Rules |
1.31 | 02/21/2020 14:49:36 |
| Use the welcome mat. |
|
 |
Unquestionably Ethical |
1.49 | 02/21/2020 14:45:21 |
| Don't use the Cyanogen and let the Gonarch live. |
|
 |
xen when |
1.34 | 02/21/2020 14:24:36 |
| Wait too long to jump into the Lambda Teleporter. |
|
 |
Less Than Desirable Consequences |
0.94 | 02/21/2020 14:04:54 |
| Die in the AMS Beam before starting the experiment. |
|
 |
Prolific Popper |
1.55 | 02/21/2020 13:58:23 |
| Kill all Protozoans in the Borderworld. |
|
 |
Black Mesa Decathlon Winner |
1.38 | 02/18/2020 12:59:47 |
| Escape the Gargantua’s Lair without taking any damage from Gargantuas. |
|
 |
Doctor’s Signature |
1.35 | 02/18/2020 12:30:52 |
| Deliver the finishing blow to Gonarch with your Crowbar. |
|
 |
The Plan |
1.47 | 02/18/2020 12:23:21 |
| Use Cyanogen to kill Gonarch. |
|
 |
Gonad Glider |
1.26 | 02/18/2020 11:45:10 |
| Get whacked into oblivion in the ledge fight. |
|
 |
Rather an Anticlimax |
0.89 | 02/18/2020 09:57:02 |
| Decline G-Man’s offer of employment. |
|
 |
Limitless Potential |
0.78 | 02/18/2020 09:56:28 |
| Accept G-Man’s offer of employment. |
|
 |
Late for Work |
1.39 | 02/18/2020 09:53:15 |
| Defeat Nihilanth in under 4 minutes. |
|
 |
Specimen GG |
1.37 | 02/18/2020 09:49:21 |
| Take out all three Healing Crystals in Nihilanth’s Chamber at the same time. |
|
 |
Well-Done |
0.86 | 02/18/2020 08:02:09 |
| Cook a Grenade for too long. |
|
 |
Orbital Trajectory |
1.29 | 02/18/2020 06:31:06 |
| Skip the opening Xen island with a secret jump. |
|
 |
Permeable Infrastructure |
0.64 | 08/23/2016 04:13:12 |
| Use the alternate path in Office Complex. |
|
 |
Nuclear Fishin' |
0.87 | 08/23/2016 04:03:49 |
| Kill an Ichthyosaur with either the Tau or Gluon. |
|
 |
Premature Expulsion |
0.66 | 08/23/2016 03:48:20 |
| Use an entire clip of Gluon ammo in one continuous shot. |
|
 |
Kinetic Repulsion |
1.01 | 08/23/2016 03:39:05 |
| Kill a Marine with their own Grenade. |
|
 |
Digital Wizardry |
0.92 | 08/23/2016 03:33:17 |
| Kill 10 enemies with a reprogrammed Sentry. |
|
 |
Futile Resistance |
1.01 | 08/23/2016 03:28:04 |
| Kill 10 Enemies with Snarks. |
|
 |
Ethically Questionable |
1.03 | 08/21/2016 05:57:26 |
| Conduct all of the questionable research experiments. |
|
 |
Unified Coupling Theorum |
1.06 | 08/20/2016 22:15:38 |
| Help the Barnacle and Headcrab find true love. |
|
 |
Mega Hertz |
0.76 | 08/20/2016 22:12:17 |
| Kill 5 Enemies with one Grenade. |
|
 |
Calculated Trajectory |
0.78 | 08/20/2016 22:10:12 |
| Kill 10 airborne Headcrabs using the Shotgun. |
|
 |
Rare Specimen |
1.25 | 08/20/2016 22:06:14 |
| Send the Hidden Hat to Xen. |
|
 |
Inflammatory Actions |
0.64 | 08/20/2016 21:26:34 |
| Kill a Headcrab using fire. |
|
 |
Hyper Saturation Conundrum |
0.98 | 08/20/2016 20:33:26 |
| Drown in Lambda Core's coolant. |
|
 |
Centripetal Attraction |
0.69 | 08/20/2016 20:28:37 |
| Kill 20 Enemies with the Hivehand. |
|
 |
Dead Reckoning |
0.67 | 08/20/2016 20:24:20 |
| Kill an Assassin with the .357 Magnum. |
|
 |
Universal Gravitation |
0.87 | 08/20/2016 20:18:05 |
| Get killed by your own Snarks. |
|
 |
Proverbial Tinkerer |
0.67 | 11/30/2015 07:28:14 |
| Interfere with the alarm and laptop in Anomalous Materials. |
|
 |
Resonance Procrastinator |
0.86 | 11/30/2015 07:22:06 |
| Refuse to insert the specimen into the Anti-Mass Spectrometer. |
|
 |
Remote Detonation |
0.84 | 05/25/2015 03:54:20 |
| Kill a Barnacle with a Satchel. |
|
 |
Gray Matter Propulsion |
0.47 | 05/24/2015 21:34:52 |
| Headshot 20 Enemies with the .357 Magnum. |
|
 |
Quantum Capacitance |
0.72 | 05/17/2015 19:39:16 |
| Overcharge it anyway. |
|
 |
Caffeine Extraction |
0.58 | 05/06/2015 05:15:07 |
| Perform surgical caffeine extraction from 20 vending machines. |
|
 |
Prophylactic Suggested |
0.54 | 05/06/2015 05:11:45 |
| Get overtaken by a Headcrab's ample anterior. |
|
 |
Brownian Motion |
0.29 | 05/05/2015 22:54:45 |
| Pass the toilet paper to the Scientist in need. |
|
 |
Convection Refinement |
0.34 | 05/05/2015 22:44:18 |
| Ruin the microwave casserole. |
