This feels like a dress rehearsal for Tsukamoto Shinya's later more notorious and near full length film Tetsuo: The Iron Man. Most of the scenes in this film were reshot for that film, and the story is nearly identical, but with more details added and a better dramaturgy.
However, all the elements of Tsukamoto's style are here. The hyperkinetic editing, the animated sequences and the brilliant soundtrack. That latter which interestingly shows Tsukamoto's influences by including a track by Throbbing Gristle, and unless I am mistaken also SPK.