Caught in the crossfire of Portal's ending, return to the ever-expanding and changing Aperture facility from a brand-new perspective of a new Test Subject, thrown into the chaos of a facility in disarray after the destruction of GLaDOS at the hands of Chell.
It looks like a Portal: Combat (cancelled mod, there's nothing we can do about it) image depicting the hallway chaos and fire: Moddb.com
Eerily similar...