Here's some long/luck achievements to torture the community. I'd like to apologize if any of them becomes a thing.
1) "President Madagascar!" - Have an "Influenza" or "Quarantined Influenza" modifier in a province in Madagascar. (Pandemic reference)
2) "Imperium Sine Fine" - As any nation that is not Byzantium, the Ottomans or a released vassal, have Byzantium be present from 1444 to 1821 without being annexed, vassalized or made into any subject that is not a tributary.
3) "Certified Otaku" - As any nation that does not start with Japanese culture, form Japan.
4) "Hashashin's Creed" - As a Shia nation, drive the templars (Knights) out of Rhodes, then out of Malta.
5) "Mingsplosives Expert" - As any nation that is not the Ming, have five vassals that are confucian and part of the Chinese culture group.
6) "For old times' sake" - As Lübeck, own and core Hamburg and Bremen while having both at 0 unrest, 0 autonomy and no nationalism.
7) "Why do these exist?!" - Have Tripolitania, Iceland, Quebec, Westphalia and Algiers exist in the same game (doesn't have to be one of them). (I considered Sokoto, but that'd take too much luck...)
8) "The Easy Way" - Start as the Ottomans and become Byzantium without being a released vassal.
9) "Huehuehue" - As Brazil, own Hue. (Province in Vietnam)
10) "Miao & Taxes" - As Miao, have 100 ducats of monthly tax income. (Minor that can be released off the Ming, reference should be obvious)