The storyline is not new, but tried and true. It could've been a good movie, maybe even a great one. The actors do their jobs, and the cinematography is sufficiently bleak. The ingredients for a good redemption story are all there, so what happened?
It's the small things that add up. The viewer is pulled out of the story with WFT moments. It's the number of these moments that spoil the film. Style over substance is never going to work, it's distracting. The constant exposition of why Clean feels dirty is excessive, we understand his motivation. You don't need to hit us over the head with a monkey wrench, we get it.
It's a misfire, style over substance.
