The Possession Experiment

Is this movie suppose to be a horror comedy? This movie doesn't feel quite so serious in regards of this story. Characters feel flat and a bit generic. Story was interesting until the reveal which was predictable. Even with the twist, it was a bit late to make the movie interesting. If this was done in a found footage way, it would have more going for it. Also why Clay acting like Shaggy minus Scooby Doo. This possession experiment seems like a failed test.