What this mod currently does:
This mod dynamically increases the damage to player and NPCs alike via their creature type and locational hit. Biological creatures are easier to kill, including yourself, while robots are generally harder to kill than humans. (But still easier than vanilla robots)
The damage is amplified by damage modifiers on the individual body parts of the creature you hit, so there is no flat modifier, but generally you can see an increase of about three times the effective damage on human creatures.
Armor can only stop a portion of the damage taken, and while power armor can save your skin, it does not make you invincible like vanilla. Power Armor will effectively make you take 50% damage. Lighter armor will only protect in a 5-25% range. You will still notice a difference in wearing power armor, and it can save your skin.