There are a couple implications that the female alien psychlos are only treated like sex objects.

Concubines are briefly mentioned by the main villain

It is implied that the main villain had a sexual relationship with a senator's daughter

An alien woman sticks out an unnaturally long tongue and licks a man's cheek in a suggestive manner.

Few minor kissing scenes.

The main villain guns down several cows including shorting the legs off in an attempt to frighten the humans.

A fair amount of explosions and gunshots, with some spontaneous deaths and clear view of some dead bodies. Little to no blood.

The climax contains much destruction and fiery loss of life.

Some occasional profanity like Damn, Hell, and Crap

1 Use of ass and damn

Terl says "Well, I'll be damned" in one scene.

The main villian's (Terl and his clerk named Ker) get intoxicated in a handful of scenes.

Some characters smoke cigarettes in some scenes.

They are so many scenes in which Terl and his friends drink green alien alcoholic beverages at a bar.

The way the villains enslave and torment humans can be extremely unsettling.

The CGI is terrible, so that might unsettle some people

A small step above Star Trek-level sci-fi action intensity.

The antagonistic race and the main villain in particular show a discomforting lack of empathy and concern for the lives of their subordinate human captives and even each other, leading to several "pointless" deaths. One scene has the main villain laughing while two humans wrestle over one oxygen mask in an inhospitable atmosphere.