My 4 first attempts to "not murder" were at the beginning of the game. I got to cherno / electro and took me some base gear. After that, i always wanted to get up in the north of cherno, to see , what happens there. I didnt shoot when i met someone and i told them "friendly". They sticked with me for a while and then murdered me with an axe or something. Since those 4 attempts, i kill nearly everyone who comes near me. When i am farming at the airfield in balota with 1 or 2 friends and there comes someone with a weapon equipped, he will definately end up dead. If someone without a weapon comes there, we`ll tell him to leave, or he gets shot. Sounds fair, huh?
