Are there ny other 'unbeatable hero - like' movie like this one ?

Not sure if you are familiar with the works of Ryuhei Kitamura, but almost all of his early films follow this same motif. Yuji Shimomura, who directed Death Trance, is a good friend of Kitamura and has choreographed fight scenes for all of Kitamura's films. Shimomura in turn has learned much of his directing style by working with Kitamura.

I would suggest seeing these films if you like the genre...
Ryuhei Kitamura's "Versus," "Aragami," "Alive," and perhaps "Azumi." Also, the Korean films "Arahan," "Volcano High (do not watch the american dubbed version, trust me)," and "The Restless."

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