Defense is a skill that can be learned by Warriors, Knights, and Paladins. It is a passive skill that raises the DEF stat by a greater amount with every skill level.
Skill Levels
SLvl 1
This level is learned automatically when a character changes their class to Warrior.
SLvl 2
This level can be learned by completing the Toughen Up quest from Varuna in Fort Bailune.
SLvl 3
This level can be learned by using the Defense III item, a rare drop from Stone Golems in Rokoko Windhole.
SLvl 4
This level is learned automatically when a character changes their class to Knight Apprentice.
SLvl 5
This level is learned automatically when a character changes their class to Knight.
SLvl 6
This level is learned automatically when a character changes their class to Paladin Apprentice.