Upon defeating the Nihilanth, Gordon is "hired" by the mysterious , an interdimensional bureaucrat who has been watching his every move. Gordon is placed into stasis, setting the stage for his return years later in Half-Life 2 .
The government sends in the HECU (Hazardous Environment Combat Unit) . Instead of a rescue, their mission is a "clean-up"—silencing the witnesses (the scientists) and eliminating the alien threat. Gordon is forced into a three-way war. Black Mesa: Definitive Edition [CODEX] [Updat...
You play as , a theoretical physicist at the Black Mesa Research Facility. Your day starts like any other—late for work, put on your Hazard Suit (HEV), and head to the Test Chamber. However, when you push a crystal sample into the anti-mass spectrometer, it triggers a Resonance Cascade . The Incident Upon defeating the Nihilanth, Gordon is "hired" by
In the Definitive Edition , this segment is fully reimagined into a massive, lush, and alien landscape. Gordon confronts the Nihilanth , the entity keeping the rift open between worlds. The Conclusion Instead of a rescue, their mission is a
Realizing the portal cannot be closed from Earth, Gordon travels to the Lambda Core to teleport himself to the alien world and stop the invasion at its source.