The Royal Court achievement

Patronage

Fund an Inspired Character's Project, and receive the end result

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) (7 lines of game script)

custom_description = {
	text = patronage_achievement_trigger
	any_courtier_or_guest = {
		has_variable = created_artifact_for
		var:created_artifact_for = ROOT
	}
}

As written in game/common/achievements/ep1_achievements.txt.

Still possible while (possible) (1 line of game script)

exists = global_var:started_patronage_achievement

As written in game/common/achievements/ep1_achievements.txt.

Source: game/common/achievements/ep1_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.