Nightshooters
In Nightshooters, a group of filmmakers find themselves on the run from a violent horde of criminals after witnessing a brutal gangland execution. Unable to flee the building they have been shooting in, the hapless film crew use their technical skill and knowledge to survive as the gangsters move in to eliminate witnesses.
With the stunt man being a martial arts master, the special effects guru ditching safety to set lethal traps, and the sound department placing radio mics to track their attackers, it becomes a strategic game of survival against all odds.