At the time of writing, I’ve just conquered Kent, the last English province on the British Isles. It took 298 years (between the game’s opening in 1444 and the final peace in 1744) but at last Ireland controls the whole of both islands. When I’ve finished integrating the land into my empire I get the message I’ve been waiting for: I’ve earned the ‘Luck of the Irish’ achievement. To get the achievement, you’ve got to be playing the game as an Irish state in ironman mode and you need to own and have cores on every province in the British Isles. It’s tough, partially since Ireland doesn’t exist in 1444. Instead, you choose one of the many independent kingdoms on the island (Kildare for me) and by making a few judicious alliances you conquer your equally small neighbours. Playing as an Irish state means constantly dodging annihilation. If you stab your friends in the back and eat your neighbours too quickly, they’re likely to band together, beat you, and divide you up. If you don’t, though, you’ll be unprepared for the moment England or Scotland decide Ireland looks like a nice place to expand.
Trying to get Luck of the Irish made for a great campaign and it speaks to what makes achievements in Europa Universalis IV so good. They ask you to succeed with states you wouldn’t normally play, or to pursue specific, unusual goals with the major players. Without achievements, EUIV’s immense sandbox is often overwhelming. In the beginning, it’s difficult to find an interesting state to play since the game’s options are so vast. In the late game, it’s hard to stay interested in a campaign without a goal. Achievements solve both of these problems: they allow Paradox, the developer, to highlight cool scenarios and they help players stay interested in their campaigns by setting clear goals.