
You are Gordon Freeman
You're running late for work. Today's agenda involves working in the Test Chamber with a high quality sample: a crystal, delivered straight from the administrator themself. The sample is the purest one yet...
After a testing accident, you find yourself fighting for survival. Escape the Black Mesa Research Facility at all costs. Don your HEV (Hazardous EnVironment suit), crowbar, and get to the surface. You're the only one that can stop this madness and figure out what's going on.
After all, you ARE an expert.