Las Vegas Bloodbath

Las Vegas Bloodbath is a shotonvideo horror film directed, written and produced by David Schwartz, and released in 1989.

After murdering Tina, Sam enters a bar and shoots the bartender in the head, then follows a car advertising the Beautiful Lady Oil Wrestlers to an apartment, using a shovel to crush the head of a gardener who approaches him outside. Inside the apartment, the oil wrestlers are holding a baby shower for one of their members, Barbara, who is the first to be killed when Sam breaks in, having her unborn child cut out after Sam unsuccessfully attempts to rape her. Sam proceeds to murder the other five captive women and a man who tries to come to their aid with various weapons, such as a knife, drill, hammer, gun and his bare hands, topping the massacre off by beheading a Jehovahs Witness who stops by after all the residents have been butchered.Eventually, a police officer arrives, and finds Sam in the gore drenched washroom, taking a bath in blood and dismembered limbs. When the officer orders him to put his hands up, Sam raises two severed arms, then shoots him. As the credits begin to roll, Sam glares at the camera, and the song Las Vegas Blood Bath starts to play. ........

Source: Wikipedia