It grows on you
Like fungus. I picked this up when I discovered it's existence just a few months ago.
On first viewing I found it somewhat lacking in depth, kind of like a half made film on a shoestring budget. But there were elements that stuck with me, mostly the very odd nature and cast of unknowns(other than Ned from Ghost Story).
Having now watched it about a hlaf dozen times, I find it has really grown on me. The female lead who I first found to be almost forgettable I now see as a truly fine actress.