What does the dream I had last night mean?

I was in a dark house with a group of people I didn't seem to recognize. There was a tall lady who had long blonde hair with a gun that was making us perform these different tasks, and she would kill the person who took the longest to complete them. We were outside, there were about 4 or 5 of us remaining. She gave us all 2 lotto tickets, and ordered us to scratch the number 9 into both of them. Then, she looked around, as if she was worried, and shot all of the remaining people in the head, but not all of us died. We all just kind of looked around in disbelief. I remember thinking it didn't hurt like I thought it would. All of a sudden, a truck pulled up and every one but me got into it. I was very cautious until someone yelled "we only have room for one more!" So I ran and tried to jump in the available space, but I ended up missing and I was hanging off of the back as the driver sped through a short span of woods. The driver let us out at an opening, and told us to run. I followed two blonde haired twin girls (looked about 10?) who said their aunt lived near. Next thing I remember, someone was screaming "the fence is green" (meaning that the electric fence containing us was turned off) I jumped it, and began following the girls. I then came to a path off to my left side which had tire marks going up hill. I stopped running after them and thought about weather I should take the path or not. I remember thinking "The house will be the first place she looks, but I don't want to be alone." It was like that thought was narrated. I looked ahead and saw that the girls were pretty far ahead so I started running after them again. Then I woke up. What does this mean?