The Devil's Playground (1989)

After an attempted rape at a party goes horribly wrong, a local headbanger is viciously assaulted and crippled by a group of vengeful jocks. Upon his recovery, he utilizes a mysterious book and black magic ritual to harness the evil powers of Satan. After luring his unsuspecting assaulters to the ominous Devil's Playground, he enacts a thoroughly unhinged throat slashing and entrail ripping revenge!