After watching a civilian cross the hallway and close their door shut, walk up the staircase and take a right at the top. Continue up the staircase and through the door. Turn all the way around and walk down the street, past the plaza, and take a right when you near the parked car. Go up the stairs and let the civilian talk to you for a moment through the bars until more Combine sweep through and set up the blue shield across the street. Continue down the passage and open the next door. Head on through the door at the opposite side of the room and continue onward. Step forward a few feet and watch the Combine soldiers push the civilians around. Once inside of the elevator, press the green button at the bottom of the panel. Press the red button next to the elevator door, then step inside once the door opens. When youвЂ™re ready to leave, just head through the next door, which will be immediately on the left of the door you entered the room through (or, to the left of the desk, opposite from the window on the far side of the room) and continue on into the enclosure. You can move the video camera on the far window by grabbing and pulling it, and you can look through its viewfinder. There are a few interactive objects in here. Head left up the next staircase and into a tightly packed studio. Watch the Strider climb over a nearby rooftop and wire up a power substation leading to the Citadel. Walk down the stairs to the end, open the door (by grabbing the handle) and walk out to a terrace overlooking another part of City 17. Grab the red bars and pull them toward you, sliding open the door and leading you into a dimly lit hallway. The yellow door on the far side of the room will unlock. Press the yellow-highlighted button on the microphone console, and watch as Eli and Russell brief you on the dayвЂ™s errands. Once youвЂ™re ready to get a move on, head up the stairs and into the windowed room. You can crush those pop cans on the shelf and toss them over the ledge, or you can even tune the radio to check out whatвЂ™s on the airwaves in City 17. Take as much time as you need to get accustomed to the controls, play with the physics, and attenuate yourself to being in the shoes of Alyx Vance. The first things youвЂ™ll notice around you are some loose objects, a radio, and a lot of Combine activity. Take in the fresh air, and get ready for a grand adventure. Look out over the horizon to drink in a perfect view of the Citadel, a towering superstructure which serves as the head of operations on Earth for the oppressive Combine empire, which you may remember as a returning player from Half-Life 2 and its subsequent episodes.

Half life 1 wiki