The low IMDB average rating is misleading. Not even sure how it was calculated as it has a lot of high scores (I calculated it myself based on ratings and percentages and I got an average of 6.62 - not 5.9. About 20% of voters gave it 10/10) The reviews are also quite positive.
This film is definitely not a comedy - dark or otherwise. It has the occasional giggle and tongue-in-cheek moments but it is dead serious and dark. It is not funny, but it is intriguing and entertaining.
It has quite a few religious references. A meditation about guilt, righteousness, the emptiness of organized religion, love, redemption and everything in between.
It is worth seeing as it is well constructed. At least the first 80% of it is very well done and keeps one interested and intrigued. In my opinion the ending was rushed and somewhat confusing.
Not for Hollywood-fare consumers.