Unbelievably bad. Ridiculously long. Not gory enough to keep you interested (like the original), and the story would be awful even if it was 90 minutes.
Even for a horror movie there are too many "putting the gun down when face to face with the killers" moments to be believed. The revenge that was so good in the original is just lame in this movie.
Awful, awful, awful. Please don't waste your time. The ending seems to set it up for a sequel, but even that is pathetic.