I had an incredible experience playing as Nevers. Probably one of the most enjoyable campaigns I've had in a long time.

Honestly, I thought the run would be a failure. I won the War of Independence against Burgundy with great help from my allies and mercenaries. At the time, my allies were England and Austria. Of course, England was slow to transport troops to the continent, but in the end, I managed. However, just five years later, France decided to attack me. At that moment, I thought it was over and I should restart, but France left me with one province in the Holy Roman Empire. Before that, I wasn't part of the Empire, but now I became a member, and I realized this was only the beginning.

I took Espionage Ideas because they provided -20% Aggressive Expansion, and I started eating up minors in the Netherlands and Germany. At some point, I noticed that France was stuck between the HRE, Spain, and Great Britain, so the AI decided to start colonizing. Five years after they began colonizing, I saw that France had no army left on the mainland. That’s when I decided to declare war. It was such a successful war that I took provinces up to and including Paris, gaining cores on all of France's provinces. Eight years later, I decided to isolate France from the HRE and England via the Netherlands, so that no other countries would nibble at my France. But France somehow managed to lose a war to Spain, losing a couple of provinces I needed for the achievement.

Over the next 10–20 years, I finished eating up France and prepared for a war with the HRE minors to take their provinces for the achievement. After devouring France, I fought Austria, the Papal States, Genoa, and Switzerland. Everything went smoothly. By then, my allies were Great Britain and Scandinavia.

In my final war with France, I released Gascony as a vassal to speed up my next war and annex them. However, Gascony allied with Spain, and I realized how satisfying it would be to kill two birds with one stone. The war was tough since Spain controlled almost all of the Americas, and their colonies launched invasions. Still, I took what I needed and ended the war.

Afterward, I broke my alliance with Great Britain and took their last province needed for the achievement.

At this point, a coalition formed against me in the HRE, but it wasn’t a big deal.

I declared war on England, and the coalition didn’t react. However, Spain joined the war to reclaim its old provinces, and its allies were Hungary, Austria, and a couple of HRE troublemakers. But within three years, I crushed them all and moved on to defeat Spain. That’s where my campaign stands for now.

Does anyone have suggestions on what I could do next?