The Colosseum is a game mode. In it, you can participate to Tournament or "Tours" to make short. Each tournament works the same as DissidiaFF's Duel Colosseum (Accessible after defeating Chaos) : You have three cards, and you have to play one to activate its effect (Battle a Heartless, participate in a minigame, etc...)
By defeating Heartless or playing Minigames, you gain Heart Points. They are a rare currency only available in the colosseum, and return to 0 at the end of each match. Hopefully, there are Treasure Cards. Accessible like all other cards, they offer Accessories or Equipment at the expense of Heart Points.
When you select a card from your hand, all your hand is discarded and you draw another. If there is a Heartless Boss or Playable Character card in your hand, the mentioned cards are not discarded, though. This effectively lowers by one the number of gained cards. As such, Heartless Bosses and Playable Characters shall be vanquished as soon as possible - at the risk of losing.
Losing lowers the player's Heart Points by half the prize he could have got if he won. This also removes a card from your hand, allowing you to have only two cards. Further losses bring you to one, then zero cards. At Zero cards, you lost the Tour. You can exit the Colosseum at any time, and your Heart Points will become PP, and you will gain all the treasures you've opened.
Now, for you... The page User:Xelias0/DissidiaKH/Colosseum is yours. What you have to do is, for the six available Tournaments (Valor Tour, Wisdom Tour, Master Tour, Final Tour, and the optional Anti Tour and Limit Tour), determine which Heartless (or Heartless team) can be fought here, at which level, with which rate of appearance, the possible treasures, the apparition rate of every single kind of cards. The order of tournament difficulty is : Valor < Wisdom < Master < Final = Anti < Limit. The higher the difficulty, the better the rewards.
I just want all accessories (see the User:Xelias0/DissidiaKH/Accessories page)ranging from Door to Light to Nothing's Thrown to be included as Final Tour rewards. This is my only wish.