The 1973 violent Swedish revenge film Thriller: A Cruel Picture, also known as They Call Her One Eye, greatly influenced Quentin Tarantino's Kill Bill and you can see why even with only one eye.
The film has rather racy full-on penetration sex scenes, which were apparently popular at the time, done by body doubles, they actually work and match well intercut with the real actors performing simulated sex in something other than the usual dull missionary position movie sex scenes.
It's a quiet film with little or no score, set in a Swedish small town with perhaps the world's most ineffective police force and most unobservant neighbors ever, pay no attention to that shotgun killing across the road.
Gaps in logic galore in the story of an innocent young ginger girl left mute by a childhood rape who becomes addicted to heroin by a vicious pimp and enslaved into prostitution before honing her skills in hand-to-hand combat, guns and stunt driving before at long last taking her bloody revenge.
Ridiculous yet one of the better cult films I've seen.