O.K first get most of your stats around 200 and then have everyone have about 20 or 30 thousand. get your agility as high as you can too.nemi counters with power ful attacks so you might want to sacrifice a few aeons to save your characters. use quick hits and have everyone ready with there best overdrives to take of some major hp at the start of the battle as well as using aeon overdrives. have as many people with there ultimate weopon so your aeons can break the damage limit and keep hp high and try to have your aeons last as long as possible.