Well aware of his fearful power, A uses it until he becomes strong enough to rely on his physical power, after which he manipulates luck to an indecent extent, using frame-by-frame advancing to pulverize his foes and even the final boss. It may be a little anti-climactic, but it's much quicker this way.

This is currently the second longest published movie (only Final Fantasy VIII is longer). You might want to take your morning and your afternoon to watch this.