Damage Resistance/Fallout: The Roleplaying Game

Damage Resistance is a derived statistic

Gameplay
In Fallout: The Roleplaying Game, Damage Resistance (DR) is determined by perks and equipment. There are four distinct types of Damage Resistances, all of which are subtracted from damage dealt before health is reduced. All base Damage Resistances start at 0.
 * Physical Damage Resistance protects against unarmed attacks, blunt force, stabbing and slashing and ballistics.
 * Energy Damage Resistance protects against laser, plasma and flame-based weaponry.
 * Radiation Damage Resistance protects against latent Radiation or Radiation-based weaponry.
 * Radiation Damage will reduce a character's maximum Health Points after subtracting the damage dealt. If the Health Point maximum is reduced below a character's current HP, their HP is reduced as well. If a character suffers from Radiation Damage and another type of Damage at the same time, the Radiation Damage is applied after.
 * Poison Damage Resistance protects against toxins, chemicals or creature stings or barbs, such as from Radscorpions or Stingwings.
 * Poison Damage is not affected by location; a character or creature has a single Poison Damage Resistance value. Mutations, chems and consumables can also increase this value.

Related Perks

 * Barbarian increases Physical DR on all hit locations based on the target's Strength stat. With a Strength of 7-8, Physical DR is increased by +1, 9-10 is +2 and 11+ is +3. This perk will not apply if the player character is wearing Power Armor or if they are a robot.
 * Nerd Rage! will increase Physical DR and Energy DR by +1 if the target reaches 1⁄4 of their maximum health. This will increase by an additional point, for up to three ranks.
 * Toughness increases Physical DR on all hit locations by +1, for up to two ranks.
 * Refractor increases Energy DR on all hit locations by +1, for up to two ranks.
 * Rad Resistance increases Radiation DR on all hit locations by +1, for up to two ranks.
 * Snakeater increases Poison DR by +2.

Magazine Perks

 * Attack of the Metal Men! increases Physical and Energy DR by +2 when fighting against robots.
 * The Mad Russian’s Revenge! increases Poison DR by +2.
 * Giant Insects Invade! increases Radiation DR by +2.
 * Science Gone Mad! increases Energy DR by +2.
 * Jungle of the Bat-Babies increases Poison DR by +3 when suffering poison damage.
 * Lost in the Snows of Lust increases Physical DR by +2 against a single attack.
 * What Sorcery is This? increases Energy DR by +2 against a single attack.
 * The Moon: A Communist Doomsday Device?! increases Physical and Energy DR by +2 against a single attack at night.
 * Advice from Married Men increases Physical DR by +1 for all party members for one scene.
 * I Married a Robot increases all DR by +2 against robots for one scene.
 * An Experience to Remember can select any magazine perk that has been used previously, but not learned.
 * Will Robots Rule the World? increases Physical and Energy DR against robots by +2.
 * What is Plasma, anyway? increases Physical and Energy DR against plasma-based weaponry by +2.
 * FH 5-03 Facepaint Fundamentals increases all DR by +1 against character NPCs.
 * Insect Repellent Special increases all DR by +2 against insects.