Jingi naki tatakai: Chojo sakusen (Battles Without Honor and Humanity 4: Police Tactics) Reviews
Fukasaku uses actors who appeared in earlier films in the series in different roles (Tsunehiko Watase, Tatsuo Umemiya) without significantly changing their appearance or characteristics. In a saga with multiple story threads and a dizzying array of characters, this adds to the confusion in this already convoluted series. I suspect there weren't enough actors in Toei Studios, if not all of Japan, to fill all the parts these movies required.
In all these films the thing I love the most is the intensity and chaos of the fight scenes, which gives them a realistic feel. In one shoot out involving two yakuza factions and police, one young criminal ends up accidentally jumping in the car of his fleeing enemies, which was not only funny, but also plausible given how something like this might unfold in real life.
Amidst all of the mayhem and violence, Fukasaku still manages to allow his characters to grow, giving them quiet contemplative moment every so often to remind the audience that despite the terrible past acts they have committed, they are still human.