I've been lurking here for a long time and as thanks to those who have helped me get achievements, I will be attaching some of my own files here. I hope they work. Note that I am not a particularly good player, but I am capable of cheese strategies.
Inv of Korea 6 Sejong_0099.Civ5Save - Unlocks Dragon Emperor (Win on Emperor), Fear the Turtle (Win as Korea), and Taekwon-DOH! (Lose as Korea). Basically I exploited a glitch where if I run out of time but am leading in score, the game apparently simultaneously counts it as a win and a lose.