Black Mesa Price History and Player Count

Black Mesa achievements

Black Mesa has 50 Steam achievements. On average a player has unlocked 13.5% of them; the rarest, Pepperoni Precipitation, is held by 2.0% of players.

• Brownian MotionPass the toilet paper to the Scientist in need.61.1%
• Convection RefinementRuin the microwave casserole.50.3%
• Gray Matter PropulsionHeadshot 20 Enemies with the.357 Magnum.36.8%
• Prophylactic SuggestedGet overtaken by a Headcrab's ample anterior.33.4%
• Anti-Matter Over MindKill a Controller without killing any of its mind-controlled Vortigaunt slaves.27.9%
• Premature ExpulsionUse an entire clip of Gluon ammo in one continuous shot.26.7%
• Inflammatory ActionsKill a Headcrab using fire.25.7%
• Limitless PotentialAccept G-Man’s offer of employment.25.2%
• Permeable InfrastructureUse the alternate path in Office Complex.23.4%
• Dead ReckoningKill an Assassin with the.357 Magnum.23.2%
• Centripetal AttractionKill 20 Enemies with the Hivehand.22.8%
• Caffeine ExtractionPerform surgical caffeine extraction from 20 vending machines.21.0%
• Well-DoneCook a Grenade for too long.19.0%
• Mega HertzKill 5 Enemies with one Grenade.18.8%
• Quantum CapacitanceOvercharge it anyway.18.8%
• Rather an AnticlimaxDecline G-Man’s offer of employment.16.7%
• Proverbial TinkererInterfere with the alarm and laptop in Anomalous Materials.16.4%
• Less Than Desirable ConsequencesDie in the AMS Beam before starting the experiment.15.8%
• Calculated TrajectoryKill 10 airborne Headcrabs using the Shotgun.13.5%
• Nuclear Fishin'Kill an Ichthyosaur with either the Tau or Gluon.12.4%
• PhD in PacifismDon't kill any Vortigaunts in the Borderworld.11.9%
• Remote DetonationKill a Barnacle with a Satchel.11.3%
• Contest PropellantHidden achievement10.9%
• Stealth TechnologyEscape the Hangar in Surface Tension without alerting the Soldiers.10.8%
• Universal GravitationGet killed by your own Snarks.10.7%
• Resonance ProcrastinatorRefuse to insert the specimen into the Anti-Mass Spectrometer.9.6%
• Digital WizardryKill 10 enemies with a reprogrammed Sentry.8.9%
• Futile ResistanceKill 10 Enemies with Snarks.7.1%
• Unified Coupling TheorumHelp the Barnacle and Headcrab find true love.6.5%
• Kinetic RepulsionKill a Marine with their own Grenade.6.1%
• One Step AheadKill 10 Enemies with Tripmines​​.6.1%
• Hyper Saturation ConundrumDrown in Lambda Core's coolant.6.0%
• Gonad GliderGet whacked into oblivion in the ledge fight.6.0%
• Ethically QuestionableConduct all of the questionable research experiments.5.3%
• Our Brains And Your BrawnAssemble all the possible Scientists and Guards at the end of Office Complex.5.3%
• xen whenHidden achievement4.6%
• Following the RulesHidden achievement4.0%
• Orbital TrajectorySkip the opening Xen island with a secret jump.​3.9%
• Black Mesa Decathlon WinnerEscape the Gargantua’s Lair without taking any damage from Gargantuas.3.7%
• Doctor’s SignatureDeliver the finishing blow to Gonarch with your Crowbar.3.4%
• Late for WorkDefeat Nihilanth in under 4 minutes.​3.4%
• Specimen GGTake out all three Healing Crystals in Nihilanth’s Chamber at the same time​.3.2%
• Rare SpecimenSend the Hidden Hat to Xen.2.9%
• The PlanHidden achievement2.6%
• Laser ImmunizationComplete Interloper without taking any laser damage.2.6%
• Unquestionably EthicalHidden achievement2.4%
• Prolific PopperKill all Protozoans in the Borderworld.2.1%
• The Rarest SpecimenHidden achievement2.1%
• Post-Mortem IntervalFind each member of the missing research teams.2.1%
• Pepperoni PrecipitationHidden achievement2.0%

Global unlock rates from Steam, most common first.