Besides a prolonged and much more pessimistic ending two other extended scenes can be found in the Director's Cut. Altogether the DC runs nearly five minutes longer than the well-known cut. Both versions can be found on the US-DVD by MPI/Fangoria.
A group of Satanic hippies wreak havoc on a small town where a young boy whose sister and grandfather were victimized by them tries to get even--with deadly results.