There are scenes of struggle and bloodshed throughout. Little or no blood or gore is depicted.
Both guns and knives are used threateningly throughout.
There is road violence, with car chases, flips, and resulting injuries.
A woman repeatedly responds violently to being kissed, by punching, headbutting, and the like.
There are several hand-to-hand struggles and fistfights.
There is a gunfight where a man is shot in the head, a woman in the shoulder.
A young woman is surrounded by several aliens; she hits a few of them with a metal pipe, runs away and jumps through a window (we see her crash to the ground below and she appears dead) and we see her later with deep cuts and bruises on her face
A man holds a gun in his hand and we hear a gunshot (we understand that he killed himself to avoid being capture.) Later, two men drive into a cement wall to avoid capture and it is implied that they died as well.
A young woman screams and runs away when she sees many alien beings dead in pools of blood on an operating table; we also see dead humans with incisions on the back of their necks.
A boy cuts his leg with a scythe and we see the bloody gash and blood on his pants; we later see him with a badly infected leg and a bloody bandage.
A young woman cuts herself on the arm and the forehead with a knife (we see a lot of blood).