This movie should've been abysmal, but it just wasn't. At its core, I'd give it a 4 for decent directing, sub-par atmosphere, and below average acting, but then there's the other factors of this movie. I have to give points for creativity, that bumps it to a five. I have to give points for an ending that I (believe or not) didn't see coming, and that was genuinely cool, that bumps it up to 5.5 stars. Then I have to give points for the special effects work. The effects were terrible, but they were that fun kind of terrible where you can tell that the filmmakers didn't take themselves too seriously.
