You have to play ALL of the missions. There are some that are secret missions and the only way you can unlock them is by doing a task that an Organization member asks you to do. Them on top of that you have to complete every mission with 100% of the mission gauge filled and then you will unlock Sora. Then go to the Moogle shop to purchase him.
Defeat Riku (after Xion)
Nothing. Riku is the final boss in Kingdom Hearts 358/2 Days. You can unlock Sora and the King for multiplayer mode, but you will have to complete every mission 100% (fill up every story mission's mission bar)
Sora is the main character, you play AS Sora. updated in most of them you play as sora but some you have to unlock him like 358/2 days
Yes. An example is Roxas can use "Two Become One", which is "Oathkeeper" and "Oblivion" put together in one Keyblade.
Yes. All versions of Kingdom Hearts 358/2 Days have the same unlockable characters. To unlock Sora, simply fill the Mission Gauge 100% for every mission on Mission Mode.
358/2 days is about the life of Roxas as a nobody when Sora goes on his quest In Kingdom Hearts Roxes was made when Sora turned into a heartless. In Kingdom Hearts 2 When Roxes fades When Sora wakes up he gets sent back to the base he started at when his cover was blownIts about roxas when he joined the organitation...kinda like a behind the scenes look at the organition whil sora,donald and goofy are fighting the nobodys and heartless.SPOILERim pretty sure sora is the one who annilated the others
In Kingdom Hearts 358/2 Days you can unlock Sora and Mickey as playable charecters. As of now, you cannot play as Diz.
Get all dones on every mission to unlock King Micky and get all Golden dones to unlock Sora.
Yes
Nintendo DS
Saix's claymore
yes