So as noted, I started playing Congo. Pretty straightforward, although I am aware the course of the first goal depends a lot on factors out of your control. I met HRE pretty early and Catholicism spread to me not long after. I made sure to expand for more population and votes. Reformation wasn't lucky for me (only England and Sweden) but a well timed plague was. Spoiler : One change you can see here is that there is now a goal completion announcement, and that it features the actual goal description to make it a bit easier to understand. The same is true for the failure announcement. If you look closely, there is also something wrong with the first Catholic goal - I did not actually spend 50 turns as pope. I played a few more turns, the Portuguese conquerors showed up the turn I completed the goal, but I had prepared with a few Pombos that defended Mbanza Congo until the Portuguese suicided. One thing that I noticed is that I received not a single slave from battling natives. I remember introducing a rule that prevents you from getting slaves before the new world is discovered to prevent Ethiopia from uselessly capturing them early on, but by that point the new world had already been conquered. So maybe there is a bug here, or another reason preventing slave capturing. Maybe the new world rule is also too strict, it's probably better to allow Congo to start capturing right from the start. I will restart and investigate those issues.