This film seems to be getting some fairly brutal reviews, but I think it might be because this is an especially difficult film to review as and entire package because there are so many conflicting layers to it. Conceptually, you have an incredibly unique and inventive cautionary tale about time manipulation, but the narrative is repeatedly dragged down by too many bland, poorly conceived, and unrealistic characters, given to actors who can't make the poor dialogue and awkward scenes work very well. Then you have really solid visual and sound editing, with some very passable ultra low-budget special effects to keep the story going. Despite all the failings of this film, it's important to consider the budget they had to work with, and time of production; which was seemingly none in both cases.
For fans of unique scifi, especially inventive takes on time travel, I highly recommend giving this film a shot for it's overall concepts and production, but keep your expectations on performances and dialogue especially low to make your trudge through the film much easier.