All of the stunts in the film were performed by the actors. No stunt performers were used to double any of the lead characters in the film.
Most of the films budget was raised using Indiegogo. Although the production fell short of their goal, the producers used their own money to finish the film.
The opening location in the film, "The Black Forest, Germany", was actually filmed in the Pisgah National Forest in North Carolina. The producers had to get permits from the FBI in order to film most of the shots in the National Forest.