Zombie holocausts and demonic scourges come in all kinds of cinematic flavors, but they’re seldom as joyous as the one depicted in Kenichi Ugana’s “Visitors: Complete Edition.” This is a film in which ordinary people get transformed into monsters worthy of “The Exorcist” — ripped flesh, rotatable heads, limitless quantities of ectoplasmic vomit — and they’re clearly having a blast.
