Mother of us All
Ultra rare0.6%Starting as Daurama Daura, have your line reform an African faith, and convert all of Africa to it
Character-locked (Daurama Daura, 867) and one of the game's longest hauls: reform an African pagan religion and convert every county in Africa to it. Two facts do a lot of work: it checks RELIGION not faith, so counties still on the unreformed version count; and reformed Achamán does NOT count (it was added after the achievement's faith list - stick to Mandé, Yoruba, Hausan, Senegambian, Akan, Kordofanian, Oromo-Somali or North-African). Take Prophet to halve reformation cost; reform with Fundamentalist + Mendicant Preachers + Sanctioned False Conversions for conversion speed. Watch fervour - below ~40% risks heresy outbreaks - and consider adopting Administrative government late (Roads to Power) so succession can't shatter the realm. Avoid carrying the save across patch versions; an old report ties a non-unlock to exactly that.