Bloodlust!

Bloodlust is a 1961 American horrorthriller film about a group of young adults who visit a tropical island only to become prey for a sadistic hunter. Filmed in 1959 and released in 1961, the feature was picked up for cinema release by Crown International Pictures. Crown released the film in 1970 as a double feature with Blood Mania.

Two couples Robert Reed, June Kenney, Joan Lora, and Eugene Persson are on a boating trip when they come across an uncharted island. The four investigate and find themselves in the clutches of Dr. Albert Balleau Wilton Graff, whose hobby is hunting both animals and humans.After learning about the terrible secrets of the island from the doctors wife Lilyan Chauvin and her boyfriend Walter Brooke as well as an investigation, the group tries to escape only to be thwarted by Dr. Balleau and his henchmen. Balleaus wife and her lover are slain and stuffed, while the men are forced to participate in a The Most Dangerous Gamestyle hunt, with their girlfriends soon joining them. The hunt includes Balleaus sailor henchmen and hidden traps, as well as Balleaus deadly skill. At the end, Balleu becomes the last one to be hunted when killed by his assistant Jondor. ........

Source: Wikipedia