We see a woman taking a shower but only from the shoulders up above the shower door (no cleavage). You can barely see her shape through the foggy door. She steps out of the shower wearing a towel that reveals most of her legs and minor cleavage, and then walks out of the bathroom where she is surprised by a man waiting for her. She rushes back into the bathroom and comes out wearing a full modest bathrobe.

Several kisses.

Several people are killed by invisible (and visible, but late in the film) monsters.

Several monsters are killed by bullets (and an axe).

A fight between two men.

Most of the violence (at least near the end of the film) is quite graphic, especially for the time.

One instance of mild religious profanity. ("heck")

A man is seen smoking a pipe on more than one occasion.

The main character is offered a drink of whisky. He and another man partake.

Multiple instances of cigarette smoking.

The titular "fiend" is really scary.