Black Mesa
achievement guide & roadmap
xen when
0.2%
No guide has been input for this achievement yet
Well-Done
Cook a Grenade for too long.
2.6%
No guide has been input for this achievement yet
Unquestionably Ethical
0.2%
No guide has been input for this achievement yet
The Rarest Specimen
0.1%
No guide has been input for this achievement yet
The Plan
0.2%
No guide has been input for this achievement yet
Stealth Technology
Escape the Hangar in Surface Tension without alerting the Soldiers.
1.3%
No guide has been input for this achievement yet
Specimen GG
Take out all three Healing Crystals in Nihilanth’s Chamber at the same time.
0.3%
No guide has been input for this achievement yet
Contest Propellant
1.3%
No guide has been input for this achievement yet
Universal Gravitation
Get killed by your own Snarks.
12%
No guide has been input for this achievement yet
Unified Coupling Theorum
Help the Barnacle and Headcrab find true love.
5.9%
No guide has been input for this achievement yet
Resonance Procrastinator
Refuse to insert the specimen into the Anti-Mass Spectrometer.
10.8%
No guide has been input for this achievement yet
Remote Detonation
Kill a Barnacle with a Satchel.
10.8%
No guide has been input for this achievement yet
Rare Specimen
Send the Hidden Hat to Xen.
2.9%
No guide has been input for this achievement yet
Quantum Capacitance
Overcharge it anyway.
21.1%
No guide has been input for this achievement yet
Rather an Anticlimax
Decline G-Man’s offer of employment.
2%
No guide has been input for this achievement yet
Prolific Popper
Kill all Protozoans in the Borderworld.
0.1%
No guide has been input for this achievement yet
Post-Mortem Interval
Find each member of the missing research teams.
0.1%
No guide has been input for this achievement yet
PhD in Pacifism
Don't kill any Vortigaunts in the Borderworld.
1.4%
No guide has been input for this achievement yet
Pepperoni Precipitation
0.1%
No guide has been input for this achievement yet
Orbital Trajectory
Skip the opening Xen island with a secret jump.
0.5%
No guide has been input for this achievement yet
Our Brains And Your Brawn
Assemble all the possible Scientists and Guards at the end of Office Complex.
0.8%
No guide has been input for this achievement yet
One Step Ahead
Kill 10 Enemies with Tripmines.
1%
No guide has been input for this achievement yet
Limitless Potential
Accept G-Man’s offer of employment.
3.1%
No guide has been input for this achievement yet
Less Than Desirable Consequences
Die in the AMS Beam before starting the experiment.
1.9%
No guide has been input for this achievement yet
Late for Work
Defeat Nihilanth in under 4 minutes.
0.3%
No guide has been input for this achievement yet
Laser Immunization
Complete Interloper without taking any laser damage.
0.2%
No guide has been input for this achievement yet
Gonad Glider
Get whacked into oblivion in the ledge fight.
0.7%
No guide has been input for this achievement yet
Following the Rules
0.5%
No guide has been input for this achievement yet
Doctor’s Signature
Deliver the finishing blow to Gonarch with your Crowbar.
0.4%
No guide has been input for this achievement yet
Black Mesa Decathlon Winner
Escape the Gargantua’s Lair without taking any damage from Gargantuas.
0.4%
No guide has been input for this achievement yet
Anti-Matter Over Mind
Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
5.1%
No guide has been input for this achievement yet
Brownian Motion
Pass the toilet paper to the scientist in need.
63.6%
No guide has been input for this achievement yet
Caffeine Extraction
Perform surgical caffeine extraction from 20 machines.
29.4%
No guide has been input for this achievement yet
Calculated Trajectory
Kill 10 Airborne Headcrabs using the Shotgun.
12%
No guide has been input for this achievement yet
Centripetal Attraction
Kill 20 enemies with the Hivehand.
25%
No guide has been input for this achievement yet
Convection Refinement
Ruin the microwave casserole.
54.3%
No guide has been input for this achievement yet
Dead Reckoning
Kill an Assassin with the .357 Magnum.
18.7%
No guide has been input for this achievement yet
Digital Wizardry
Kill 10 enemies with a reprogrammed Sentry.
9.7%
No guide has been input for this achievement yet
Ethically Questionable
Conduct all of the questionable research experiments.
7.4%
No guide has been input for this achievement yet
Futile Resistance
Kill 10 enemies with Snarks.
7.7%
No guide has been input for this achievement yet
Gray Matter Propulsion
Headshot 20 enemies with the .357 magnum.
44.8%
No guide has been input for this achievement yet
Hyper Saturation Conundrum
Drown in Lambda Core's coolant.
7.5%
No guide has been input for this achievement yet
Inflammatory Actions
Kill a Headcrab using fire.
21.6%
No guide has been input for this achievement yet
Kinetic Repulsion
Kill a Marine with their own grenade.
4.9%
No guide has been input for this achievement yet
Mega Hertz
Kill 5 enemies with one grenade.
13.9%
No guide has been input for this achievement yet
Nuclear Fishin'
Kill an Icthyosaur with either the Tau or Gluon.
10.4%
No guide has been input for this achievement yet
Permeable Infrastructure
Use the alternate path in Office Complex.
25%
No guide has been input for this achievement yet
Premature Expulsion
Use an entire clip of Gluon ammo in one continuous shot.
14.8%
No guide has been input for this achievement yet
Prophylactic Suggested
Get overtaken by a Headcrab's ample anterior.
37.9%
No guide has been input for this achievement yet
Proverbial Tinkerer
Interfere with the alarm and laptop in Anomalous Materials.
19.7%
No guide has been input for this achievement yet