The main female characters et wears a tight skimpy two-piece outfit during the entire movie and the camera angles show off close ups of her cleavage and covered butt several times.

Several people are killed by aliens, usually in a violent but not too gory way.

A woman's foot is stabbed by an alien, showing blood, and she is drug down a tunnel.

None that I can remember.

The movie relies on intense scenes rather than gore, and does a very good job of exploiting claustrophobia.

Claustrophobics will likely be unsettled by the film, and the alien scenes may be scary for some viewers.