A long time ago I watched a movie about a family who was murdered by a gang (I think a motorcycle gang). At least they think they got the entire family, but the son survives. HE goes on a revenge spree and gets them one at a time. I think a lot of it played out in the woods and I remember that one of them was impaled against a tree. It wasn't a great film and I think quite low-budget, but maybe someone can give me a heads up on the name of the movie.