Of all the elements of the series, "Zombiepowder."s action sequences received the most feedback. The battle scenes were criticized for their unsophisticated art by "Anime News Network", with rough drawings and few backgrounds, though in its second review ANN noted a guiding philosophy to the background omission: elements of the scene which were not props in the fight faded out whenever action began. ANN also said that the action was entertainingly violent, kinetic, well-paced, easy to follow, and interspersed well with comedic moments. They ultimately concluded the action was handled better than average, but with the disclaimer that the action was "the entire sum and substance" of the series. IGN opened their review with a Tite Kubo quote from the first volume's flap: "The theme is fighting. Sitting there and just reading it without thinking is fine. But if you ever feel like it please try to use your mind as you read," and said that if this advice was taken "Zombiepowder." could be a "great shōnen tale", but that without it the story was only enjoyable by dissection and comparison to other series. Gorban's view was again the most positive, stating that the essential trait of a memorable fight scene is to pit two charismatic figures with contrasting personalities and combat styles against each other, and that the series grasped this notion admirably. Finally, Den of Geek found "Zombiepowder."s "wall-to-wall" action sequences colorful and fun, but complained that the sheer mass of them overwhelmed the rest of the story.