In Shining Armor

In Shining Armor is a perk in the Fallout: New Vegas add-on Dead Money.

Effects
The Courier gains +2 DT against qualifying weapons(see bugs) while wearing reflective helmet or eyewear and an additional +5 while wearing:
 * Advanced radiation suit
 * Chinese stealth armor
 * Gannon family Tesla armor
 * Legate armor
 * Legion centurion armor
 * Metal armor
 * Metal armor, reinforced
 * NCR Ranger combat armor
 * NCR Ranger patrol armor
 * Radiation suit
 * Recon armor
 * Remnants power armor
 * Space suit
 * T-45d power armor
 * T-51b power armor

Behind the scenes

 * The name of the perk is a reference to the phrase "A knight in shining armor."
 * The +2 DT effect for wearing reflective eyewear is handled by a separate, hidden perk.

Bugs
This perk does not provide any DT boost due to the fact that the parameter that is referenced when checking the skill type of enemy weapons is "Energy" instead of "EnergyWeapons". This means that the function "IsWeaponSkillType" will never return a value that can activate the perk effect, because there is no weapon skill called "Energy".

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