mild nudity

Man's foot caught in bear trap (in a research lab!).

Numerous closeup scenes of blood and tissue pulp leaking out of injured people.

Unseen monster slams a girl against a door so hard that her facial features are dented into a metal door. Later her jaw and teeth are shown mashed out of alignment.

Plenty of F words, a few more S words, A words, etc.

Pot smoking by the activist crew (during a raid!).

Dread atmosphere that "something really bad" was going on at the research facility, increasingly intense.

Unknown "thing" killing the crew one by one.

Bright white electrical energy zapping through corridors.

Human research subject is shown in crucified posture with wire and tube implants to brain, convulsions.