Proficiency is an area tested by DEDDON which determines a person's strongest/most reliable combat skill.
Hand to hand combat. (Martial arts, boxing, kick-boxing, etc.)
The use of instruments in combat. (Swords, staffs, clubs, scythes, etc.)
The use of long-range instruments in combat. (Guns, Cannons, Lasers, etc.)
Using the body's natural energy in combat. (Elements, techniques, etc)
Using the body's natural energy to create or alter things in reality. (Alteration, spells, alchemy, etc.)
Doll Master Edit
Creating and using artificial life for various purposes. (Artifical humans, puppets, etc)