Victoria 3 got a new update with new content for Russia, Congress Poland as a playable nation and other things: Victoria 3: State and Revolution

It means that new achievements are now available on vic3.jane.berlin, and new countries on Vic3 Tech Tree, such as the already mentioned Congress Poland and others.

	New achievements in the free update
	The Could-Have-Been King - As Alexei II, appoint a fascist Regent
	The Wide Dniepr Roars - As Ukraine, own all of your homelands and have Fervor over 40
	Quiet Flows the Yukon - Settle Cossacks in Alaska
	No Truce with the Furies - As Estonia, get the Confrontation ending of the State and Revolution Journal Entry and form the Socialist World Republic
	Imagine - As Council Republic, have no pop below Standard of Living 10

	New achievements with State and Revolution
	Lover of the Russian Queen - Appoint Rasputin as your Favorite and complete Healing the Future
	Don't Trust the Liberals... - Have the liberals both carry out and win the Russian Revolution
	Not Those Reds - As Poland, get the Red victory in Whites and Reds and win the independence war
	Trans-Siberian Express - Send a member of the Romanov family to Siberia
	Micromanager - Publish every Ukase at least once
	Crime and Punishment - Hang Dostoevsky

There also seems to be an issue where some achievements got locked again. In my case Hyperpeace was temporarily locked, so I did it again, but then the older timestamp came back. Others disappeared completely: Great Game no re was gone from my Steam list, even though I got it in the same Russia campaign as The Great Game. Today it came back along with 9 other achievements, all with today's date. Great Game no re might be related to the Great Game rework: according to the 1.15 patch notes, the Great Game is no longer a starting objective, and its journal entries can now be pursued under any objective or none.

So it's worth rechecking your Vic3 achievements. If one is missing, it might come back on its own, or you might be able to earn it again from an old save.

Also, I got into CK3 lately and I like playing it in a chill way, sort of like reading an interactive book, so I wrote a review. Maybe you'll find it interesting.