Jayson from Basement of Ghoulish Decadence blog sent me info and screen grabs from the reg. 1 DVD release of Joe D'Amato's TOUGH TO KILL.
Quite the poor release, no extras, just a few chapter stops. Interlaced widescreen transfer. No burned-in subtitles, unless they were "matted-over" by the widescreen bar. Released by "Italian Stallion", distributed by Ventura Distribution.
Big thanks goes out to Jayson for the info and screen grabs. Cheers, mate!