A segue from Chan-wook Park's masterful Oldboy (which is now rightfully #87 in the IMDB top-250). Again this is ultraviolence married with excellent cinematography. The multitude of cut aways from the gore increase the ick factor as we're never sure he's not going to cut back for a money shot. The character development is quite good, especially for a lead who is deaf and dumb but not stupid, and yet the entirety adds up to less than its parts. It is strangely disengaged.
I think this is the first of three Vengeance movies, with Oldboy being the second.