I am trying to get the Achievement for a Diplomatic Victory, and as others have noted, it is a real grind. I was playing peacefully after one early game war. But as a Wonder-mongerer I was about to inadvertently win a Cultural Victory. I gave away or sold any Great Works that I had, but was still closing in on a CV. In order to win a Diplomatic Victory, I have been forced to wipe out three other civilizations so that I no longer received tourists from them. That's some real Diplomacy for you. Also, I intentionally ramped up building coal power plants in order to get the "Seahenge" Achievement. I was successful, but now coastal tiles around the world have been submerged, even though I have been building flood barriers and Carbon Recapture projects every where I can.