Flesheater

Flesheater, sometimes written as FleshEater or Flesh Eater, is a low budget 1988 independent horror film, specifically a zombie film, by Bill Hinzman. Hinzman, who wrote, produced, edited, directed and starred in the film, is best known for playing the cemetery ghoul in George A. Romeros Night of the Living Dead 1968.

Meanwhile, the farmer has stumbled across a large tree stump which he proceeds to remove with the help of his tractor. Under the stump is a large wooden box with an ancient seal telling not to break open the box. The farmer breaks the seal and opens the box. Inside is the Bill Heinzman Flesheater who precedes to eat the farmer making him a zombie in the process. Both zombies head towards where the kids are.Two of the kids who retreated to the barn for some alone time are killed by the flesheaters. As the flesheater is killing the kids, two of their friends walk in and see whats happening then they run outside to warn the group at the party. Inside the barn the kids who were attacked become zombies and head out of the barn for fresh victims back near the party and one of the girls is attacked in the woods by the zombies. It tears a chunk of shoulder away but the girl is saved by her boyfriend who hears her screams and tackles the flesheater. ........

Source: Wikipedia