How bad is it? It's one of the worst-made films I've seen.
Should you see it? F#$% no. If anyone says different, slap them.
This film often comes up in discussions of worst horror films, worst sequels (it's not actually a sequel, but - unbelievably - has its own sequel), and worst films. It is quite bad; it's not very watchable, however, as the film consists primarily of a supposed-psychic wandering around a corn maze, searching for his daughters who have been possessed by the spirits of two girls who disappeared some time ago. The film goes in and out of focus, you can hear the generator that powers the set equipment and there's one spotlight used for all shots, making this very shoddily made. The acting is no better, nor is the plot.