The Devil's Punisher is more enjoyable in its earlier episodes where the plot is less convoluted and the pacing more balanced. The evolution of Anson Chen's character becomes almost laughable because of his sophomoric acting and total lack of understanding of mature nuance. He makes Austin Powers look subtle in comparison!
The second challenge is that I'm not convinced the writers knew where the plot line was heading so to move the story to some sense of conclusion in its later episodes, they resorted to instances of Deus ex machina making the end of the film appear contrived, convoluted and campy. In terms of cinematography, it looks like one of the film editors discovered colour enhancement and went wild with over-saturated scenes and colours that appeared artificial. In one of the episodes, everyone and everything is bright fuchsia.
On the whole, though, the series has its moments but is in need of much better directing, particularly for Anson Chen, as well tighter editing.