There is a bar scene where strippers are dancing for an extended time. Full frontal female nudity is shown.

Some topless women are seen in a club.

Breif making out.

A handful of shootings; some blood is occasionally seen.

Some people get slashed in the throat or neck by the alien's flying discs; lots of bloodshed normally.

When the aliens get killed, they spurt gooey white blood and then disintigrate/explode.

17 uses of the f-word

Heroin is seen but never used.

Some of the fights and chases scenes are a little intense.

When the alien attacks victims, these scenes are a little creepy and intense.