This is just a typical low budget slasher, but it's not as bad as you'd think.
Ok so the main four characters - four horny college kids on a road trip - are a pretty unlikeable bunch, you honestly don't care what happens to them. But they're not bad actors and they carry the movie along pretty well.
The movie doesn't actually pick up until halfway through, the first half is just teens skinny dipping, having sex and cheating on one another, then getting lost in a cornfield owned by a psycho farmhand - it's pretty boring (except for a rogue dismembered thumb and a body stashed in a scarecrow).
Second half is standard run and hide from the psycho. It's predictable, not particularly scary or suspenseful and it seems to have 'borrowed' a few ideas from other more successful horror movies.
But I didn't hate it.
It's not the worst way to spend 90 minutes.