The lone survivor of a mass slaying in Crandon, Wis., last month is speaking publicly for the first time about the horrific event.

Charlie Neitzel told the Milwaukee Journal Sentinel that the gunman, Tyler Peterson, was a "crazy psycho" and a "cold blooded murderer."

Neitzel survived his three gunshots by playing dead, he said. Neitzel was the last person Peterson shot during his Oct. 7 rampage.

Peterson shot seven people at a party in Crandon after arguing with his ex-girlfriend, Jordanne Murray, 18. She was among those killed.

Peterson later fatally shot himself as law enforcement agents closed in.

Neitzel tries not to think about the fatal shooting of his six friends, he said.

He's talked to the victims' families, who wanted to know if their kids suffered, he told the paper. Neitzel said all but one died right away.