Salvage (2009)

A character is seen having sex in sillhoutte, you see her breasts when she changes clothes

Blood splatters against a tree. A bloody man comes running from his house and is non-graphically shot, though blood briefly spatters the camera. Several other instances of non-visceral bloody corpses/people. A mans neck is sliced, he gushes blood and flails around. Several instances of bloody wounds.

Not a ton. A few "F-words".

The teenage character occasionally smokes

Armed military forces make residents of a neighborhood stay indoors at gunpoint. Characters are trapped inside and see other people screaming and frantically trying to get indoors