| Game |
Achievement |
Points |
Unlocked |
 |
 |
Rather an Anticlimax |
0.89 | 12/23/2020 21:24:59 |
| Decline G-Man’s offer of employment. |
|
 |
Specimen GG |
1.37 | 12/23/2020 21:20:30 |
| Take out all three Healing Crystals in Nihilanth’s Chamber at the same time. |
|
 |
Doctor’s Signature |
1.35 | 12/22/2020 21:29:14 |
| Deliver the finishing blow to Gonarch with your Crowbar. |
|
 |
Unquestionably Ethical |
1.49 | 12/22/2020 21:20:33 |
| Don't use the Cyanogen and let the Gonarch live. |
|
 |
Post-Mortem Interval |
1.53 | 12/22/2020 21:18:56 |
| Find each member of the missing research teams. |
|
 |
The Plan |
1.47 | 12/22/2020 21:18:13 |
| Use Cyanogen to kill Gonarch. |
|
 |
Gonad Glider |
1.26 | 12/22/2020 20:02:04 |
| Get whacked into oblivion in the ledge fight. |
|
 |
Orbital Trajectory |
1.29 | 12/18/2020 01:15:43 |
| Skip the opening Xen island with a secret jump. |
|
 |
Ethically Questionable |
1.03 | 07/29/2020 21:45:50 |
| Conduct all of the questionable research experiments. |
|
 |
Futile Resistance |
1.01 | 07/29/2020 21:36:50 |
| Kill 10 Enemies with Snarks. |
|
 |
Remote Detonation |
0.84 | 07/23/2020 05:36:25 |
| Kill a Barnacle with a Satchel. |
|
 |
Less Than Desirable Consequences |
0.94 | 07/23/2020 01:17:16 |
| Die in the AMS Beam before starting the experiment. |
|
 |
Hyper Saturation Conundrum |
0.98 | 07/22/2020 19:43:02 |
| Drown in Lambda Core's coolant. |
|
 |
One Step Ahead |
1.21 | 07/22/2020 19:37:44 |
| Kill 10 Enemies with Tripmines. |
|
 |
Inflammatory Actions |
0.64 | 07/22/2020 19:32:08 |
| Kill a Headcrab using fire. |
|
 |
Digital Wizardry |
0.92 | 07/22/2020 18:49:19 |
| Kill 10 enemies with a reprogrammed Sentry. |
|
 |
Calculated Trajectory |
0.78 | 07/22/2020 18:39:25 |
| Kill 10 airborne Headcrabs using the Shotgun. |
|
 |
Unified Coupling Theorum |
1.06 | 07/22/2020 07:21:45 |
| Help the Barnacle and Headcrab find true love. |
|
 |
Resonance Procrastinator |
0.86 | 07/22/2020 07:06:13 |
| Refuse to insert the specimen into the Anti-Mass Spectrometer. |
|
 |
Nuclear Fishin' |
0.87 | 07/16/2020 08:34:31 |
| Kill an Ichthyosaur with either the Tau or Gluon. |
|
 |
Quantum Capacitance |
0.72 | 07/16/2020 08:33:10 |
| Overcharge it anyway. |
|
 |
Well-Done |
0.86 | 05/26/2020 22:57:12 |
| Cook a Grenade for too long. |
|
 |
Kinetic Repulsion |
1.01 | 05/26/2020 22:54:50 |
| Kill a Marine with their own Grenade. |
|
 |
Permeable Infrastructure |
0.64 | 04/27/2020 06:38:55 |
| Use the alternate path in Office Complex. |
|
 |
Universal Gravitation |
0.87 | 04/24/2020 07:41:04 |
| Get killed by your own Snarks. |
|
 |
Limitless Potential |
0.78 | 03/11/2020 03:19:26 |
| Accept G-Man’s offer of employment. |
|
 |
Premature Expulsion |
0.66 | 03/11/2020 02:37:00 |
| Use an entire clip of Gluon ammo in one continuous shot. |
|
 |
PhD in Pacifism |
1.01 | 03/10/2020 23:29:59 |
| Don't kill any Vortigaunts in the Borderworld. |
|
 |
Contest Propellant |
1.07 | 03/10/2020 17:28:31 |
| Find the snack supply canister. |
|
 |
Anti-Matter Over Mind |
0.75 | 03/10/2020 17:25:29 |
| Kill a Controller without killing any of its mind-controlled Vortigaunt slaves. |
|
 |
Stealth Technology |
1.07 | 03/03/2020 06:43:45 |
| Escape the Hangar in Surface Tension without alerting the Soldiers. |
|
 |
Our Brains And Your Brawn |
1.25 | 02/17/2020 12:50:55 |
| Assemble all the possible Scientists and Guards at the end of Office Complex. |
|
 |
Caffeine Extraction |
0.58 | 12/11/2019 19:50:53 |
| Perform surgical caffeine extraction from 20 vending machines. |
|
 |
Prophylactic Suggested |
0.54 | 04/02/2019 22:57:21 |
| Get overtaken by a Headcrab's ample anterior. |
|
 |
Centripetal Attraction |
0.69 | 05/13/2015 17:48:19 |
| Kill 20 Enemies with the Hivehand. |
|
 |
Dead Reckoning |
0.67 | 05/07/2015 06:15:43 |
| Kill an Assassin with the .357 Magnum. |
|
 |
Gray Matter Propulsion |
0.47 | 05/06/2015 04:02:46 |
| Headshot 20 Enemies with the .357 Magnum. |
|
 |
Mega Hertz |
0.76 | 05/06/2015 03:55:16 |
| Kill 5 Enemies with one Grenade. |
|
 |
Brownian Motion |
0.29 | 05/06/2015 00:02:27 |
| Pass the toilet paper to the Scientist in need. |
|
 |
Convection Refinement |
0.34 | 05/06/2015 00:00:34 |
| Ruin the microwave casserole. |
|
 |
Proverbial Tinkerer |
0.67 | 05/05/2015 23:55:05 |
| Interfere with the alarm and laptop in Anomalous Materials. |
| Game |
Achievement |
Points |
|
 |
Rare Specimen |
1.25 |
| Send the Hidden Hat to Xen. |
|
 |
Prolific Popper |
1.55 |
| Kill all Protozoans in the Borderworld. |
|
 |
The Rarest Specimen |
1.55 |
| Carry the Hidden Hat to Endgame. |
|
 |
xen when |
1.34 |
| Wait too long to jump into the Lambda Teleporter. |
|
 |
Following the Rules |
1.31 |
| Use the welcome mat. |
|
 |
Laser Immunization |
1.45 |
| Complete Interloper without taking any laser damage. |
|
 |
Black Mesa Decathlon Winner |
1.38 |
| Escape the Gargantua’s Lair without taking any damage from Gargantuas. |
|
 |
Late for Work |
1.39 |
| Defeat Nihilanth in under 4 minutes. |
|
 |
Pepperoni Precipitation |
1.57 |
| View the *other* secret ending. |
