none

There is no gore (aside from some scrapes and bruises) or shown violence.

A horde of Vikings are attacked offscreen by an unknown predator

A cave is filled with skeletons

A man on a raft is killed offscreen

A man is killed offscreen, sounds of crunching and gushing can be heard

A monster attacks two children

One utterance of "damn" and one utterance of "arse".

Mild language is said throughout this entire movie

A man drinks from a flask. He also examines some old vodka but does not drink

A man sneaks up on (and startles) a young girl exploring an army vehicle. There is an strong undercurrent of tension and a suggestion that something bad may happen.

The movie generally has a disturbing, ominous tone. Some of the "monster" scenes are filmed in an intense way.

some loud angry monster roars

The scene where the skeletons are shown is tense

Scenes where the group encounters the monster, the scenes are dark and ominous

Some of the group become trapped inside an army vehicle which is then dragged towards the water.

The monster frightens the kids when it is either shown or attacking the group

Some jump scares in some of the chase scenes from the monster and the group

Even though there isn't an excessive amount of onscreen violence, the film has a dark and frightening tone.