Name of survival film made between 2014-2018 ANSWERED

This survival/horror film is low budget and features an all girl cast. Set in a U.S. forest or back country. The girls have been captured and do not know each other. They start to get picked off in grisly fashion by men wearing big masks made of animal carcasses. The men never talk and we never see their faces.

The girls end up helping each other and get trapped in an old farming barn where they get tools to use as weapons. As the film progresses, we see that the men have chips embedded in the back of their heads which sets them on their murdering spree. It turns out to be a game with the men being controlled. 

The winner is a pretty redhead if I remember correctly, although I think it has twist ending. I give the year of the film's release between 2014 and 2018.