The phrase "one's attack damage" refers to the amount of damage that a player or character can inflict on an opponent during combat in a game, typically an RPG (Role-Playing Game) or strategy game. This value represents how much harm the player's character is capable of dealing to enemies through physical attacks, magical spells, or other offensive abilities. The attack damage determines the strength and effectiveness of the character in combat situations and can be increased by leveling up, equipping better weapons or armor, or using certain skills and abilities.