Junk Sec

Abigail is the youngest member of JunkSec, a salvage company specializing in recovering objects and artifacts from the ruins of the Old City, destroyed 10 years ago when an apparition appeared in the skies above it.
Now it is a tangle of old buildings and seemingly new ones, growing and spreading from the old city centre and only halted by great barrier walls surrounding it.

While investigating a newly discovered underground facility that seems to date from before the disaster the crew are split up and ambushed inside.

Now cut off from her teammates, Abigail has to rush deeper and deeper into the ruins before the facility's aging reactor goes critical and kick-starts the City's spread across the whole continent.