In this guide I will only show all the achievements of Black Mesa with their respective Descriptions, including the new achievements of the 1.0 update.
Black Mesa Xen Achievements Guide
I discovered that some achievements are Bug, I mean they didn’t come out doing the thing that says in the description like the “Rather an Anticlimax”, “PhD in Pacifism” and “Limitless Potential”, that the truth until I finished Xen to see if the two achievements of the G-Man finals came out, but nothing.
So before someone asks me “how did I get the descriptions of hidden achievements / new achievements?”, I took it out with an external program.
All Achievements Before Version 1.0
Brownian Motion
Pass the toilet paper to the Scientist in need.
Convection Refinement
Ruin the microwave casserole.
Gray Matter Propulsion
Headshot 20 Enemies with the .357 Magnum.
Prophylactic Suggested
Get overtaken by a Headcrab’s ample anterior.
Caffeine Extraction
Perform surgical caffeine extraction from 20 vending machines.
Centripetal Attraction
Kill 20 Enemies with the Hivehand.
Permeable Infrastructure
Use the alternate path in Office Complex.
Quantum Capacitance
Overcharge it anyway.
Inflammatory Actions
Kill a Headcrab using fire.
Proverbial Tinkerer
Interfere with the alarm and laptop in Anomalous Materials.
Dead Reckoning
Kill an Assassin with the .357 Magnum.
Mega Hertz
Kill 5 Enemies with one Grenade.
Premature Expulsion
Use an entire clip of Gluon ammo in one continuous shot.
Universal Gravitation
Get killed by your own Snarks.
Calculated Trajectory
Kill 10 airborne Headcrabs using the Shotgun.
Resonance Procrastinator
Refuse to insert the specimen into the Anti-Mass Spectrometer.
Remote Detonation
Kill a Barnacle with a Satchel.
Nuclear Fishin’
Kill an Ichthyosaur with either the Tau or Gluon.
Digital Wizardry
Kill 10 enemies with a reprogrammed Sentry.
Futile Resistance
Kill 10 Enemies with Snarks.
Hyper Saturation Conundrum
Drown in Lambda Core’s coolant.
Ethically Questionable
Conduct all of the questionable research experiments.
Unified Coupling Theorum
Help the Barnacle and Headcrab find true love.
Kinetic Repulsion
Kill a Marine with their own Grenade.
Rare Specimen
Send the Hidden Hat to Xen.
All New Achievements of Version 1.0
Anti-Matter Over Mind
Kill a Controller without killing any of its mind-controlled Vortigaunt slaves.
Unquestionably Ethical
Don’t use the Cyanogen and let the Gonarch live.
Contest Propellant
Find the snack supply canister.
Laser Immunization
Complete Interloper without taking any laser damage.
Rather an Anticlimax
Decline G-Man´s offer of employment.
Black Mesa Decathlon Winner
Escape the Gargantua´s Lair without taking any damage from Gargantuas.
Specimen GG
Take out all three Healing Crystals in Nihilanth´s Chamber at the same time.
Late for Work
Defeat Nihilanth in under 4 minutes.
Limitless Potential
Accept G-Man´s offer of employment.
Post-Mortem Interval
Find each member of the missing research teams.
The Plan
Use Cyanogen to kill Gonarch.
Our Brains And Your Brawn
Assemble all the possible Scientists and Guards at the end of Office Complex.
Gonad Glider
Get whacked into oblivion in the ledge fight.
Doctor’s Signature
Deliver the finishing blow to Gonarch with your Crowbar.
Following the Rules
Use the welcome mat.
Orbital Trajectory
Skip the opening Xen island with a secret jump.
Less Than Desirable Consequences
Die in the Test Chamber before starting the experiment.
xen when
Wait too long to jump into the Lambda Teleporter.
Stealth Technology
Escape the Hander in Surface Tension without alerting the Soldiers.
One Step Ahead
Kill 10 Enemies with Tripmines.
The Rarest Specimen
Carry the Hidden Hat to Endgame.
PhD in Pacifism
Don’t kill any Vortigaunts in the Borderworld.
Prolific Popper
Kill all Protozoans in the Borderworld.
Pepperoni Precipitation
View the “other” secret ending.
Well-Done
Cook a Grenade for too long.