After the G-Man's speech, you'll be on a train. Once it stops, exit and proceed through the station. You'll encounter Civil Protection (CP) officers. They will direct you, but don't resist. Follow their instructions to the processing area. You'll witness citizens being interrogated and processed. Eventually, you'll be directed to a room where Barney Calhoun, disguised as a CP officer, will recognize you and help you escape. He'll tell you to follow him, but then directs you to an alleyway. Your goal is to reach Kleiner's Lab.
Half-Life 2
Arrival in City 17
Follow Barney Calhoun's escape plan after arriving in City 17 in Half-Life 2. Evade Civil Protection and reach Kleiner's Lab through the chaotic streets.