Completed Idea Guys and Rekindle, and currently doing FCFS and Odin. I also had fun with Lucky Lucca and Strait Talk, though in both cases I used an 'Exodus-to-South-Africa' strategy to survive. That was one of my most fun games because I just kept coming up with new goals for achievements and achieving them all the way through. I don't even remember them all now, but I know I got Blackjack (the original goal of the campaign), both the ones for becoming emperor (the generic one and the Spain-specific one), Imperio español, Trade Hegemon, Guarantor of Peace (after pushing France to Bermuda, taking back the Holy Land from the Ottomans, and a late-game tussle with Russia), and Neither Holy Nor German (by releasing single-province client state republics around the Mediterranean and making theme free cities). It's not a hard nation, but Castille -> Spain is set up for a lot of achievements my campaign with them in 1.17 got me something like 10 or 12 achievements, easily the most of any game. I'll second First Come, First Serve and Ideas Guy, as I got them both in the same run and had a lot of fun doing it.
