Ok, first of all, you unlock the goddess of fate cup when you finish all other cups and beat the second battle where sora meets axel. The reccomended level by the game is level 57, but get a few levels higher cuz I am still stuck on friggin round 6. Here's a tip from me: Be at least level 65+, because you can defeat the enemies waaaaaaaaay easier. You might also wanna be great experienced with those fat heartless (especially the ones that breathe fire) because in round 6 you have to defeat 1 fire breather and 1 regular. You also should be sure to equip: (Elixers and Hi-potions if you suck at dodging, blocking, or if you're 64 and under); The Hero's Crest keyblade; lots o' ethers; guard ability; MP rageability; and anything else that might help you. There is also a comand attack between goofy and sora. This will really help u along the way. You should also be sure to summon stitch when you can, because if you do know the move Ohana, this will play a major factor. Hope u win!
In order to get it, you have to beat the first Xemnas fight (skyscraper).have to be at a level 53
It is hades that is in the goddess of fate cup
beat all the other cups and the first fight with xemnas.
If you have the full game you get to the last level. It really is not very hard.
Aisa (Αίσα), personification of lot and fate
Ananke is the goddess of destiny, necessity, and fate.
Tykhê, Greek goddess of fortune, chance, providence and fate.
Fate, destiny, chance.
Freyja
You must really stink, because that level is easy!
It's called the Hades Paradox Cup. Beat all other cups, level all your forms (including final) to maximum level, and summon max level.
To be a minor goddess: there are many nymphs in Greek myths.