Everything I expected, very enjoyable.
This movie was bloody, violent, dark, and almost completely devoid of a plot. In other words, everything I went to see it for. What is especially commendable is what this movie didn't have... it didn't try to shoehorn in a love story, or a story of redemption, or anything else to try and be more than it is... a gory movie about ninjas cutting people in half (and apparently an epidemic of people being born with backwards internal organs, but whatever).