This is a good film for 99% of the duration. I feel that the ending has occluded this film from higher acclaim.
It is shot in a rather naive fashion. This is clearly done to create a more chilling feel to the film - a feeling of isolation becomes apparent very soon on due to this filming technique.
The gruesome characters are very well acted and presented especially the 'nutcase' called Joe. However, the wholesome (normal) characters are a little too pathetic for my liking - granted, they are supposed to come across as pathetic but this is done a little OTT.
The film starts slowly (and the naive camera work smacks of 'B' movie to start with) and very normally but you soon get a feel of the impending brutality that is about to occur. This is one of the most 'twisted' movies with respect to cold-hearted violence.
After the abrupt and unbelievably lazy ending I was left feeling disappointed. I would have given the film a 9 if the ending was in keeping with the rest of the film but as it is it gets only a 7 on the strength of the 'eeriness' and nail-biting scenes earlier on in the film.
Give it a watch and excuse the ending!