It's impressive what they have done with such a small budget and you can see that the people that made this show a lot of promise but the film really needs to be about 50 minutes long rather than almost two hours.
I think a whole lot of scenes from the flashbacks and about 75% of the gun-fight sequence could have been cut and it would have made the film a lot more watchable. As it stands it feels very over-long and is too dialogue-heavy in parts but then conversely too action-heavy towards the end of the film. Whoever made this should ask Charlie Brooker for a job, I'm sure with the guidance of professional editors the authors of this could be making amazing stuff in a few years.
Review by swaroberts from the Internet Movie Database.