The description for the achievement "All belongs to Mother Russia" says:
"Start as a country of Russian culture and form Russia."
...However, I started as Pskov and formed Russia, and I didn't get the achievement. I googled about it, and the conclusion I got is that you must be muscovite to unlock the achievement.
To me, it's a bit wierd. Because in the description, it just says "Start as a country as Russian culture" and not the exact culture, which in this case is muscovite. Pskov, is novgorodian. Which is russian.
*Proof of ironman*: https://i.gyazo.com/077b0c96075174cda8d7a318bfc0c34a.jpg
*Promoted culture is novgorodian*:https://i.gyazo.com/ad9cd3fc7c93a7996c80f1641318bc0b.jpg
"Start as a country of Russian culture and form Russia."
...However, I started as Pskov and formed Russia, and I didn't get the achievement. I googled about it, and the conclusion I got is that you must be muscovite to unlock the achievement.
To me, it's a bit wierd. Because in the description, it just says "Start as a country as Russian culture" and not the exact culture, which in this case is muscovite. Pskov, is novgorodian. Which is russian.
*Proof of ironman*: https://i.gyazo.com/077b0c96075174cda8d7a318bfc0c34a.jpg
*Promoted culture is novgorodian*:https://i.gyazo.com/ad9cd3fc7c93a7996c80f1641318bc0b.jpg