Crusader of Atom

Crusader of Atom is a perk in the Fallout 4 add-on Far Harbor.

Obtaining
This perk is given as possible reward for the quest Cleansing the Land by destroying Far Harbor on behalf of the Children Of Atom, as well as the armor Atom's Bulwark

Effects
Provides a bonus to your weapon's damage. The higher your rads, the higher the bonus.