The Hunters isn't the worst movie you've ever seen, it's just a bit of a mess. There are two things to recommend it highly, the cinematography is well above par for this kind of movie, and the location is just incredible. I think the sound editing and music is also quite good. The problem is the good things just serve to highlight the not-so-good things. If the good cinematography is of people trying way too hard to act, it's not interesting. If the location is terrific, but it's not really used all that well, you don't have much of a reason to make the film.
There is some excellent casting for the leading hunters and the main enemy, but the other characters are often miscast, overplayed, or underwritten. Certain scenes feel improvised, while others just seem to go on and on. The lead actor seems to be rather miscast for his role, which is strange since he apparently directed. There are also characters that just kinda drop in and out of the movie, especially the lead (only?) female.
The editor seems to be trying to make this into a horror movie, but it's not, and the nasty jump cuts and random shots of some dude yelling are not scary, they're annoying. The editing overall leaves a lot to be desired, leading me to wonder if the director cut the movie as well, since there's no editor listed in the IMDb crew page.
There was a pretty good movie to be had here had the script thought of better uses for the location and the actors been reeled in by a better director. But overall, it's better than bad, and if you're scouting for an incredible castle in Germany (?) you could do worse than watch this. Perhaps it's best to just think of it as a weird travelogue to Fort Goben.