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This perk is given as a possible reward for the quest Cleansing the Land.
Provides a bonus to your weapon's damage. The higher your Rads, the higher the bonus, up to a maximum of +100% at >300 Rads.
The bonus damage applies to ballistic damage, energy damage and pure radiation damage only and does not affect explosive damage and radiation poisoning damage. In this sense, it exactly like Bloody Mess.
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