How do you kill a man with 1 kick and 3 punches?

Answer 1

With as much force as possible

1. Kick him in the stomach
2. Strike the back of the neck with an elbow
3. Punch him in the throat.
4. Strike him to the head

Answer 2

Hit the wind pipe in the neck area, if you hit it right it collapses and the human chokes to death.