From LSWiki

Metal Resistance is DEAD! R.I.P. It isn't here anymore. Don't bother looking for it in-game.

Class: Resistance Skills
Attribute: Vitality
Pedagogy: Body Alteration
Practitioner Term: Metal Resistor
Hidden Skill

This skill represents the conditioning of one's body to resist being damaged by the amalgam metal and essences that partake of its
nature.

Metal resistance can be increased by exposure to metal damage, changing more quickly according to one's somatic adaptability.  It
will decay over time, weakening more quickly according to one's somatic adaptability.

See Also: metal affinity

Trainers

Association:
Weapons of Vengeance: Varn
Guild:
Quest: