enum AchievementType {
	A_INVALID = -1,
	A_MOB,
	A_ITEMFIND,
	A_ITEMUSE,
	A_EXPLORE,
	A_QUEST,
	A_SPECIAL,
	A_MAX
};

enum MobAchievementType {
	AM_INVALID = -1,
	AM_ID,
	AM_SIZE,
	AM_RACE,
	AM_ELEMENT,
	AM_MVP,
	AM_MAX
};

enum ItemAchievementType {
	AI_INVALID = -1,
	AI_ID,
	AI_EQUIP, // see item_db->equip
	AI_TYPE, // see item_db->type
	AI_MAX
};