The Four of the Apocalypse... (1975)

In 1873 Utah, a ragtag group of four petty criminals—gambler Stubby Preston, pregnant prostitute Bunny O'Neal, alcoholic Clem, and disturbed Bud—wander the desolate Badlands. As they scavenge for survival, they are pursued by Chaco, a ruthless bandit seeking revenge after assaulting Bunny. The survivors' hope for redemption is marred by loss and madness, leaving Stubby to confront Chaco in a final, bloody confrontation.