Here goes: In my dream I was in an unknown location. I was alone, which was okay. I was trying to get a grasp of where I was when someone walked into my dream. I instantly choked them out. CRAZY! After they were down and out, another person walked in, and I choked them out as well! This happened as a pattern for at least five people, none of which I knew. After the last person fell, Kratos (for those of you who've play God of War) entered my dream, and I killed him. The dream quickly ended after that due to a disturbance in my room... (alarm...).
Well, considering the amount of violence that went on in the dream, it could be that you subconsciously are angered about something that has happened. Also, since Kratos was the personification of power and strength and obeyed all of Zeus' orders, therefore, being a symbol of justice, there may have been an event you were involved in which did not go the way you would have justifiably expected. Thus the killing of Kratos.
