Project Legion Ending Explained [SPOILER!]

SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!

SPOILERS AHEAD

Project Legion Summary and Synopsis

Feral creatures that prey on humans have descended upon the city. A furious fight for survival begins as the outside world descends into chaos and a former Marine (UFC superstar Donald “Cowboy” Cerrone), barricaded inside his apartment, prepares to come out fighting.

Source: Wikipedia (CC BY-SA 3.0).