yes could that be the cause since when i left it at -1 my weapon damage was  not accurate ,when i set enemy health to 2 would be 2  or 3 shots to kill them so i thought t it was the random causing it but when i set  it to zero random damage the killing enemy with bullets matching there health was back to normal

apologies i didn't phrase the bug right ,the player is the one not getting damaged correctly when hit by an enemy 's projectile. if player has 100 health and an enemy damage is set to 1 it will take  2,3,4,5 enemy projectile hits for player's health to drop to 99