Achievement Description Brownian Motion Pass the toilet paper to the scientist in need. Caffeine Extraction Perform surgical caffeine extraction from 20 machines. Calculated Trajectory Kill 10 Airborne Headcrabs using the Shotgun. Centripetal Attraction Kill 20 enemies with the Hivehand. Convection Refinement Ruin the microwave casserole. Dead Reckoning Kill an Assassin with the .357 Magnum. Digital Wizardry Kill 10 enemies with a reprogrammed Sentry. Ethically Questionable Conduct all of the questionable research experiments. Futile Resistance Kill 10 enemies with Snarks. Gray Matter Propulsion Headshot 20 enemies with the .357 magnum. Hyper Saturation Conundrum Drown in Lambda Core's coolant. Inflammatory Actions Kill a Headcrab using fire. Kinetic Repulsion Kill a Marine with their own grenade. Mega Hertz Kill 5 enemies with one grenade. Nuclear Fishin' Kill an Icthyosaur with either the Tau or Gluon. Permeable Infrastructure Use the alternate path in Office Complex. Premature Expulsion Use an entire clip of Gluon ammo in one continuous shot. Prophylactic Suggested Get overtaken by a Headcrab's ample anterior. Proverbial Tinkerer Interfere with the alarm and laptop in Anomalous Materials. Quantum Capacitance Overcharge it anyway. Rare Specimen Send the Hidden Hat to Xen. Remote Detonation Kill a Barnacle with a Satchel. Resonance Procrastinator Refuse to insert the specimen into the Anti-Mass Spectrometer. Unified Coupling Theorum Help the Barnacle and Headcrab find true love. Universal Gravitation Get killed by your own Snarks.
Contributed By: Guard Master.