Trying to tell the full arc of a story within fifteen minutes is a real challenge when it comes to film. It is best accomplished by way of showing, with little telling. The director/writer might be tempted to use dialogue to compress plenty of exposition into a small time window, but it's a solution that will usually fail.
"Darkness Falls" overcomes some of its reliance on dialogue with some beautiful and haunting imagery. In the first scene it establishes a moody atmosphere that lends itself perfectly to telling a story through visuals, but the mood is dampened by the expository dialogue. The story itself is a combination of familiar sci-fi tales, with an ending that some viewers may see coming. Nevertheless, this is the work of a competent director who has real skills as a cinematographer.
I have to say I found the English subtitles annoying, because there were numerous errors in spelling and grammar, which take the viewer our of the film. Correcting them would really help for English-speaking viewers.