All Under Heaven achievement

The Heavenly Kingdom

Claim the Mandate of Heaven as the Head of Faith of a Christian faith

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 = ep4_02_the_heavenly_kingdom_achievement_trigger
	has_title = title:h_china
	government_has_flag = government_is_celestial
	religion = religion:christianity_religion
	faith.religious_head ?= this
}

As written in game/common/achievements/ep4_achievements.txt.

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

Source: game/common/achievements/ep4_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.