Adamantium Skeleton (Fallout: The Roleplaying Game)

Adamantium Skeleton is a perk in Fallout: The Roleplaying Game.

Effects
When suffering damage, the amount of damage needed to inflict a critical hit on a limb increases by the rank in this perk. For example, with only one rank in this perk, a critical hit (and injuries) is applied to a limb with six or more damage, rather than the normal five or more.

Each time this perk is taken, the level requirement increases by three.