Battlemaster

The Battlemaster or Gladiator vocation, in Japanese, is a vocation that first appears in Dragon Quest VI and appears throughout the Dragon Quest series. They merge vocations of a Warrior and a Martial Artist.

Dragon Quest X
In Dragon Quest X, it is one of the advanced vocations that focuses on Damage. It is unlock after completing Quest 177.

Strategy
They have the Guts skill tree.

Vocation Quests
You can unlock and progress through this vocation with these quests:
 * Quest 177 (unlock quest)
 * Quest 179
 * Quest 180
 * Quest 181
 * Quest 182
 * Quest 183 (final quest)

Trivia

 * The word 'Armamentalist' is coined from arma, Latin for 'weapon', and mentalist which is equivalent to a spiritualist