This is much better than reviews would suggest. On a scale of 0-10 for flawed films where 0 = The Wicker Tree (flawed and bad), 5 = Ginger Snaps (flawed but good), 10 = Dellamorte Dellamore, aka Cemetery Man (flawed but brilliant), this rates 5 +/- 1, depending on what you think of the acting.
The film itself is well shot, well conceived and well executed. Compared to utter crud like Jeepers Creepers, this is in a different league when it comes to intention and execution. If Amicus produced Midsomer Murders, it could be something like this.
There are annoyances: poor dialogue, clichéd characterisation but also pleasant surprises: my heart sank a little when the film began with a girl (our heroine, a "final girl" right from the start: she just doesn't realise it) getting out of a car that won't start on a country lane. Nicely subverted when she walks a little distance and is home.
It is a first feature and has maybe a few too many references but, on the whole, its sly humour works well. I've watched an awful lot of crap horror in the so-bad-it's-good category: this is not one of those.
It's a proper film and is worth a look.