Arrowhead (1995)

Sara and her friends were looking for peace and quiet. All they wanted was to enjoy nature, the sun and the river, and to get away from civilization, work and boyfriends. But destiny had other plans. Before they realize, they are caught in a most wicked game of cat and mouse where only the strongest, the most resourseful and the horniest can survive... And pointed straight at them awaits Arrowhead!