The four-province light blue nation to my northeast is Shirvan, but the province that borders mine is their capital and has an actual fort, which means you need at least 9 troops in order to even attempt to siege it, and Ardabil has a force limit of 6 at the start. So that leaves what appears to be no expansion opportunities to my north, west and south. They were the one that ended my second game by attacking me about two months in. The steel blue nation to my west is Qara Qoyunlu and they continue down into Iraq, as well as holding the OPM nation to my north as a vassal. They were the one that ended my first game, attacking me around 4 or so years into that game. Not only do they have 12 provinces, but also two vassals. The light purple nation to my south is Ajam. Why you ask? Because Ardabil is the green nation in the picture below that starts out with one province and four whole troops, and is surrounded by nations that are more powerful, in some cases much more powerful. I had actually tried this one out twice before, and both times the game didn't last any longer than a couple years before I was destroyed. The second achievement doesn't necessarily have to follow Shahanshah as forming Persia can be done by multiple nations in the area, but since they are both linked by becoming Persia I wanted to tackle both in the same game. So basically you have to conquer the entirety of the Ottomans and Mamluks.

The second achievement, This Is Persia, requires one to form the nation of Persia and then conquer the entire regions of Anatolia and Egypt, as well as the three states that form Greece. The first achievement, Shahanshah, requires one to start out as OPM Ardabil in the Azerbaijan region, and form the nation of Persia. So as I mentioned in the main EU4 thread I started a run at a pair of achievements that are both considered 'very hard'.

Eu4 extended timeline wiki persia