| Game |
Achievement |
Points |
 |
 |
Brownian Motion |
0.29 |
| Pass the toilet paper to the Scientist in need. |
|
 |
Caffeine Extraction |
0.58 |
| Perform surgical caffeine extraction from 20 vending machines. |
|
 |
Calculated Trajectory |
0.78 |
| Kill 10 airborne Headcrabs using the Shotgun. |
|
 |
Centripetal Attraction |
0.69 |
| Kill 20 Enemies with the Hivehand. |
|
 |
Dead Reckoning |
0.68 |
| Kill an Assassin with the .357 Magnum. |
|
 |
Digital Wizardry |
0.92 |
| Kill 10 enemies with a reprogrammed Sentry. |
|
 |
Ethically Questionable |
1.03 |
| Conduct all of the questionable research experiments. |
|
 |
Futile Resistance |
1.02 |
| Kill 10 Enemies with Snarks. |
|
 |
Gray Matter Propulsion |
0.47 |
| Headshot 20 Enemies with the .357 Magnum. |
|
 |
Hyper Saturation Conundrum |
0.98 |
| Drown in Lambda Core's coolant. |
|
 |
Inflammatory Actions |
0.65 |
| Kill a Headcrab using fire. |
|
 |
Kinetic Repulsion |
1.02 |
| Kill a Marine with their own Grenade. |
|
 |
Mega Hertz |
0.77 |
| Kill 5 Enemies with one Grenade. |
|
 |
Nuclear Fishin' |
0.87 |
| Kill an Ichthyosaur with either the Tau or Gluon. |
|
 |
Permeable Infrastructure |
0.64 |
| Use the alternate path in Office Complex. |
|
 |
Premature Expulsion |
0.67 |
| Use an entire clip of Gluon ammo in one continuous shot. |
|
 |
Prophylactic Suggested |
0.54 |
| Get overtaken by a Headcrab's ample anterior. |
|
 |
Proverbial Tinkerer |
0.67 |
| Interfere with the alarm and laptop in Anomalous Materials. |
|
 |
Quantum Capacitance |
0.72 |
| Overcharge it anyway. |
|
 |
Rare Specimen |
1.25 |
| Send the Hidden Hat to Xen. |
|
 |
Remote Detonation |
0.85 |
| Kill a Barnacle with a Satchel. |
|
 |
Resonance Procrastinator |
0.86 |
| Refuse to insert the specimen into the Anti-Mass Spectrometer. |
|
 |
Unified Coupling Theorum |
1.06 |
| Help the Barnacle and Headcrab find true love. |
|
 |
Universal Gravitation |
0.87 |
| Get killed by your own Snarks. |
|
 |
Prolific Popper |
1.63 |
| Kill all Protozoans in the Borderworld. |
|
 |
PhD in Pacifism |
1.05 |
| Don't kill any Vortigaunts in the Borderworld. |
|
 |
The Rarest Specimen |
1.62 |
| Carry the Hidden Hat to Endgame. |
|
 |
One Step Ahead |
1.25 |
| Kill 10 Enemies with Tripmines. |
|
 |
Stealth Technology |
1.12 |
| Escape the Hangar in Surface Tension without alerting the Soldiers. |
|
 |
xen when |
1.40 |
| Wait too long to jump into the Lambda Teleporter. |
|
 |
Our Brains And Your Brawn |
1.29 |
| Assemble all the possible Scientists and Guards at the end of Office Complex. |
|
 |
Orbital Trajectory |
1.33 |
| Skip the opening Xen island with a secret jump. |
|
 |
Following the Rules |
1.36 |
| Use the welcome mat. |
|
 |
Doctor’s Signature |
1.40 |
| Deliver the finishing blow to Gonarch with your Crowbar. |
|
 |
Gonad Glider |
1.31 |
| Get whacked into oblivion in the ledge fight. |
|
 |
Post-Mortem Interval |
1.60 |
| Find each member of the missing research teams. |
|
 |
The Plan |
1.54 |
| Use Cyanogen to kill Gonarch. |
|
 |
Unquestionably Ethical |
1.55 |
| Don't use the Cyanogen and let the Gonarch live. |
|
 |
Contest Propellant |
1.12 |
| Find the snack supply canister. |
|
 |
Laser Immunization |
1.51 |
| Complete Interloper without taking any laser damage. |
|
 |
Black Mesa Decathlon Winner |
1.44 |
| Escape the Gargantua’s Lair without taking any damage from Gargantuas. |
|
 |
Anti-Matter Over Mind |
0.79 |
| Kill a Controller without killing any of its mind-controlled Vortigaunt slaves. |
|
 |
Specimen GG |
1.42 |
| Take out all three Healing Crystals in Nihilanth’s Chamber at the same time. |
|
 |
Late for Work |
1.46 |
| Defeat Nihilanth in under 4 minutes. |
|
 |
Limitless Potential |
0.82 |
| Accept G-Man’s offer of employment. |
|
 |
Rather an Anticlimax |
0.93 |
| Decline G-Man’s offer of employment. |
|
 |
Pepperoni Precipitation |
1.64 |
| View the *other* secret ending. |
|
 |
Well-Done |
0.91 |
| Cook a Grenade for too long. |
