You need to eat and rest all the time, this is all you need to know. After taking enough survival perks to find more food in forests and taking a cannibal trait, and cooking all the meat and vegetables, you will kill almost anyone by taking damage in your face and eating afterwards. With the biggest enemies just have some traps that will stun them, lead them to those traps after you take some damage, run away a bit, eat and rest. It is a very easy game. Just don't be stunlocked by multiple enemies and you can kill anything.Yeah, since I wanted to go head-on against weak enemies, my Lona end up dying against rats due to the lack of stamina lol