Game of Death 2 AKA Tower of Death

Traveling to Japan to investigate the mysterious murder of his brother Bobby Lo discovers a secert trail which leads to the mysterious Tower of Death. A forbidden forteress buried hundreds of feet under the earth its deadly secret is gaurded by elite warriors each champooing a different style of combat. To bring his brothers killer to justice and discover the Towers secret Lo must first run the gauntlet of death from which no one has ever returned alive.