So Close is the third chapter of Left Behind, back in the present at the Colorado Mountain Plaza. Ellie has to restore power to reach the crashed military helicopter on the mall's upper level, which means siphoning gas for a generator, fighting stalkers in a flooded stockroom and sneaking through a pet store full of infected.
Part 3 of 6 in Left Behind
So Close has one section, The Crash Site. It runs from the helicopter's landing spot down a maintenance corridor to a flooded shipping room, through a pet store, and back up the escalators to the wreck.
From the lower level Ellie reads the markings on the helicopter. Nearby lie a severed arm and a note: a soldier was bitten, and their commanding officer cut off the arm to try to save them. The door to the upper level needs power, so you follow the cables down a maintenance hall.
A cat startles Ellie in the half-flooded stockroom. The main door is jammed, so you go round to a side door and a generator with an empty tank. Ellie fills a can by siphoning a truck and gets a mouthful of gas for her trouble, and stalkers come for her. After you kill them and start the generator, a cable drops into the water and fries two more, so you climb up and walk along the tops of the air ducts.
You come down into a pet store full of infected and sneak or fight your way to its front gate, which lifts back to where you started. Two clickers wait there. With the power on, ride the escalators up, cross a broken glass structure and jump into the helicopter, which tilts and nearly throws Ellie out. Inside is a first aid kit with everything she needs, and she hugs it close.
Back in a Flash
Back in a Flash is the first chapter of Left Behind. After a short flashback to Riley's surprise visit at Ellie's school in Boston, you play Ellie in the snowed-in Colorado Mountain Plaza, searching the mall for anything that can help Joel.
The Enemy of My Enemy
The Enemy of My Enemy is the fifth chapter of Left Behind and its main combat chapter. With the medical kit in her pack, Ellie fights back across the Colorado Mountain Plaza to Joel's hiding place while armed survivors and infected roam the halls, and you can turn the two groups on each other.
Escape from Liberty Gardens
Escape from Liberty Gardens is the final chapter of Left Behind: Ellie and Riley run from a horde of runners through the Boston mall, climbing scaffolding to find a way out. It has no collectibles, and finishing it unlocks the gold trophy Don't Go.
Fun and Games
Fun and Games is the fourth chapter of Left Behind and the busiest one for trophies: Ellie and Riley ride a carousel, wreck a photo booth, play pretend in Raja's Arcade and hold a water gun fight inside Liberty Gardens. Along the way Riley finally explains why she brought Ellie to the mall.