Well, OK. The movie is not going to be an award nominee. Just get it down if you are about to watch this film. Managing expectations is a point in this case. Comic-ish intro sequence is actually rather good and sets you up for something with greater production value, but it is a decoy. The intro is probably the best part of this film.
Overall, the whole thing looks like a student's work, and almost every part of it leaves you wishing for better. Better acting, better camera work, better script, better FX.... It is not horrible, its just not on the level we are taught to expect from modern-era cinema, with millions of dollars invested into the making of a single movie.
Despite all downsides, I rated it 7. I found it to have a certain... charm. When you get to the core of it, it is not your typical "picnic-in-the-woods-turn-massacre" slasher. The whole thing is a rather dull implemented plot device to tell you a story of a person's journey from being a scared boy to a man. The monster is really secondary to that. It could be as well "group-of-friends-escape-building-on-fire", or some other dramatic event. And this is what I liked, the film has a message, its not just blood! guts! gore! tits! of an average horror flick.