He had an appetite for destruction.

The Minnesota man nabbed after his ailing wife was found dead in their home had just thrown her a “death party” — complete with sex, drugs and heavy metal, according to a report.

When officers got to the couple’s Searles home last week, they found the words “Death Parde [sic] God Hell” in red paint on the front door, according to a police report obtained by the Mankato Free Press.

A naked Duane Arden Johnson, 58, ran outside, yelled that his wife was dead — and then hurried back into the home, the report said.

Brown County sheriff’s deputies found him in a bathtub, saying he was trying to cleanse little white and black “things” from his skin.

Inside, officers also found 47 guns — many of them stolen — and hundreds of rounds of ammunition, they said.

On the stairs lay Debra Johnson’s body, wrapped in a sheet.

Duane Johnson told cops his bride had been in a nursing home but begged him to take her home to die.

During a days-long death party, the couple rocked out to their favorite song, Quiet Riot’s “Metal Health” — and abused meth.

Johnson said his wife couldn’t eat or drink, so he used snow to wet her mouth. She had convulsions but wouldn’t let him call for help, he said.

Less than two hours before she died, the pair had sex and she stopped convulsing and was at peace, he said.

After she died, Johnson wrapped his bride in linen, “like the Bible told me to do,” he said.

He was held in Brown County Jail on charges of criminal neglect and receiving stolen property with his bail set at $250,000.