GF and BF get lost in the woods. They hallucinate things. Their phones don't work, duh. Maybe something supernatural is happening?
Bring out the Fear focuses almost entirely on its two characters, probably for budget reasons, and there's nothing wrong with that; when you have limitations, it's smart to build your film around them. But if the bulk of your film is about two characters and their interactions, at least one of them has to be likable. BotF's characters are not; worse, they're *bland*, not even interestingly unlikable.
Unfortunately, it is very hard to care what happens in BotF. Yes, something creepy is happening, but what's it matter? It's okay with me if these people die, and it's okay if they don't; they seem about as interesting as an overheard phone conversation on public transit. Maybe they're too realistic.
Sound/score are good though. And they do what they can with a clearly very limited budget, at least in terms of filming. It's just that they forgot to give us a reason to care about anybody in the film.