Originally Posted by MathGuy42
To get World Domination, the game does not need to be played to the kill/time limit. The person needing it kills the one who has it, then the host ends the game. It should pop after the game ends. Sometimes it doesn't first try, especially if another achievement is earned at the same time. The 2nd try almost always does it.
Also, use the default Thunderdome so it's easy to meet in the middle.
MathGuy speaks nothing but the truth. Thanks to him I now have the World Domination achievement.
If anyone needs it feel free to hit me up.
GT: Fortuitous Rex