Base game achievement

A Perfect Circle

Have only two distinct parents, grandparents, and great grandparents, counting absent ancestors as individual Characters

Conditions as the game checks them

Possible decides whether the achievement can still be earned in a run; happened is the check that unlocks it (common/achievements/_achievements.info).

Unlocks when (happened) (4 lines of game script)

custom_description = {
	text = a_perfect_circle_achievement_trigger
	parent_relatedness >= 0.8
}

As written in game/common/achievements/standard_achievements.txt.

The file gives no “possible” condition for this one.

Source: game/common/achievements/standard_achievements.txt, game/common/achievement_groups.txt and the English localisation, Crusader Kings III 1.20.0.3. Unlock share: Steam Web API, 2026-10-02.