What's the name of the movie where some young adults go to the forest to camp and they are encountered with 3 human type of monsters that hunt them. These 3 killers have a weird face and use a axe and bow and arrow to hunt the campers.

Sounds like Wrong Turn (http://www.imdb.com/title/tt0295700/)

Could possibly be a film called "Trigger Man"


http://www.netflix.com/Movie/Trigger_Man/70082258?trkid=1851333

I think you are talking about Wrong Turn