Descr1: 1. A person attempts to garrotes another person from the back
  2. The other person disappears
  3. The person carries an invisible body on his back
  4. The person drops the invisible body on the ground and carries it up again
Descr2: 1. The player initiates a melee attack from behind an enemy
  2. The enemy disappears
  3. The enemy re-appears facing the player
  4. The enemy dies