At 5 min 27 sec a dead Squirrel is shown graphically for a good min and is zoomed in, it's bloody and you can see its insides. Looks really fake but just incase anyone is triggered by dead squirrels.
the entire first tape/sequence has a very extreme amount of gore. organs and tissue are exposed and shown throughout most of the scene. it personally made me nauseous and i have a good tolerance for gore.
The whole movie is safe, but I wanted to mention a few things!
There is coughing and gagging in the vent scene but it is safe.
Spoiler -
During the last scene, two men reach a dead end hallway and become cornered. The camera man is injured in the throat and blood spills out, which to me sounded similar to vomiting. Just thought I'd mention it for those with stronger emetephobia. ❤️🩹