At the beginning we see someone apply zip-ties to a door and hook up unknown gas to a house air conditioning. We see a young boy wake up and wonder in the house. The boy has difficult breathing and eventually passes out on the floor; we only see his toes curl as he struggled to breathe. The rest of the family wakes up, including a young girl, while the mother tries to open the door, only to find they are locked inside the house. A little later, we find out that the particular gas used was to kill them instead of sleeping gas to rob them.
There are some brief flash backs of them struggling in the house.
There is a brief drug bust scene, very short.
A man is shot offscreen.
A man is shot execution style at the back of the head, nothing gory.
Some other characters are also shot offscreen.
Later, Annika passes many of the dead characters, we see the blood surrounding their bodies.
Annika bashes a man behind the head with a crowbar, and hitting the side of the face of another man, we see his bloody cut.
Two men are shot, both have bloody areas where they were shot.