Returning to Joel Edit
Ellie awakens after hearing gunshots in the distance, quickly remembering Joel needs her. She packs the medical kit and proceeds to jump from the helicopter she was in. She proceeds down the hall finding a photo from a decaying corpse as she does.
After jumping over a ledge, she hears someone scream. While hidden, she watches as Clickers attack two men. One is quickly killed, the other dying shortly after despite killing one of the Infected with his bow. Three more men appear from down the room, quickly killing the last Clicker. It turns out they are the same people who Joel and Ellie encountered at the university.
Ellie quickly takes the dead man's bow and proceeds to kill the men. She mumbles to herself how she will "give [them] a fight" and will "stitch [Joel] up". She comes to an air duct where she finds a recorder and another corpse.
Human vs Infected Edit
Once out, she sees a small group of Infected and two more men. The men hide from the Infected, one saying they should wait for others to arrive before fighting. Ellie proceeds to either allow more men to arrive and for them to fight the Infected themselves or cause some noise to force a conflict between the Infected and humans early. Alternatively, she just runs past them, leaving the pair to fight alone. (player-determined)
Ellie is almost back to Joel, but is forced to go through another store when the entrance is blocked by a fence. More Infected are inside and four more hostile survivors quickly arrive. Ellie either causes a fight between the two, waits it out as before, or sneaks past them before they realise the others' presence. (player-determined)
Ellie proceeds over a metal container and manages to lift a metal shutter to reach the American Princess store, back where she started. While proceeding back to Joel, a huge group of Ellie's pursuers have found Joel, having heard Callus behind the door she locked. Thinking fast, Ellie gets their attention and proceeds to kill them all. Just as she is about to unlock the Yogurt store, more hostile survivors appear, one almost shooting her with a Hunting Rifle. As Ellie struggles to deal with the sudden appearance of nearly a dozen men, Infected swarm the downstairs area, turning the men's attention to them instead of Ellie. Ellie sides with either the Infected or the humans, assisting them in killing the other enemy (player-determined) and then kills the survivors.
Ellie is relieved that it is over, daring any others hiding to face her and end up like their friends. Ellie frantically unlocks the store, hoping Joel is alive. He is, and Ellie quickly closes the shutter, the screen fading to black.