Thriller planning

In our group we have thought about making a satanic thriller, since it hasn't been done a lot and we want to be different. I have done some research about satanic thrillers and to see if they would work for us. After some research, I have found 'The Shrine' directed by John Knautz. 
Storyline: 
After a young American backpacker goes missing in Europe, a group of journalists link his disappearance to a remote village in Poland. They travel there hoping to get the story, but as they unravel the secrets behind this mysterious village, they are suddenly pursued by hostile locals. Unable to escape, they soon become the next victims of ritualistic human sacrifice. Forced into the gruesome reality of true survival horror, the journalists soon discover that this village hides a much darker secret than they could ever imagine.

The film had been nominated for a Grammy Award for its incredible soundtrack. So I think in order to achieve well with our thriller, we need to concentrate on sound as well as the actual filming.