Yes, this is a low budget film with little dialog. Milo Ventimiglia is an underrated but extremely talented actor and I think he made the film. If you haven't seen it yet, watch Pathology.
Rhys Coiro was adequate - but as for the American Psycho reference he is no Christian Bale and this is no American Psycho. That particular film is pure brilliance, whereas this is just an interesting character study. If I am engrossed in enough in a film that I can't stop watching and get completely wrapped in the main character I consider it a good film.
I did and this is, I liked the music - both the style of the music and the use in the film. I actually believe that in this movie less dialog was better, but I didn't find it completely predictable - I wasn't really sure what was going to happen at the end. I might have ended it differently or perhaps had more twists but overall I thought it was a solid film with solid acting. It's worth the 90 minutes of your time.