I tried once to attack without a weapon, but you always do 0 damage. You can do damage without a weapon by using skills, but not by using the attack option. Also the strength is the power off the character itself, the psych damage is only the weapon. So if i go fight to a bodydiulder, he has more strength than me, but if i use a metal sword and he a wooden one, we are both the same, because he has more strength but less psych damage. I hope you get it now.