Starting as a Norse custom nation with no more than 200 points and a maximum of 5 provinces, own & core Scandinavia and the British Isles and convert it all to Norse.
Starting as a Custom Nation of up to 400 points in the British Region, own New York, San Francisco, Suez, Bombay, Calcutta, Hong Kong and Yokohama by 1524.11.11.
As a country that does not start with a female heir, have a female heir while having a Castle in your capital (more advanced fort buildings do not count).
Starting as Sweden, enact the Allotment System government reform, have 80 regiments of Carolean raised at the same time with at least +40% infantry combat ability.