El Topo (1970)

A black-clad gunfighter roams a mystical desert with his young son, avenging a village massacre with ruthless precision. Haunted by guilt and driven by a woman's challenge, he embarks on a surreal journey to defeat four enigmatic gun masters, each embodying a different philosophy. His quest spirals into a surreal battle between faith, violence, and redemption, with each encounter pushing him closer to an inevitable reckoning.