The question isn't very descriptive; to defeat any Heartless, all you have to do is attack them with the Keyblade.
It depends which one you are trying to beat
You beat certain missions or heartless
Kingdom Hearts 1: Beat Cerberus in the hades cup Kingdom hearts 2: Complete the Pride Lands for the second time
You can't play Kingdom Hearts Final Mix after beating the regular Kingdom Hearts games. They are separated and needed to be bought if want to be played.
you need to beat the MCP, and you do that by first you beat Sark, and you can open a way through to MCP then you do a reaction command with Tron to damage MCP
beat all but one enemie and collect all the orbs per round that way you can get lots of orbs
You have to find lots and lots of heartless.
You just take Sora, and go to town on heartless.
i beat him when i was a level 20
well you beat one with the keyblade. the only time you become one is near the end
Just beat a bunch of heartless and eventually you will get some
You beat certain missions or heartless
If I recall correctly, sora continues on, individually, to fight 1000 heartless.
GO to mission 83 or beat bad dogs at beast's castle
did you beat the invisible heartless boss? if you did, you may want to restart from yoru last save
Do you mean Barbossa? If you do then WHATEVER YOU DO KEEP HIM OUT OF THE SHADOW and when its dark keep hitting the heartless with the little light.
Go to the top of the mountain in the Pride Lands. There are thousands of heartless there and they never run out. You can get practice there and get a lot of things to synthesize with. But that is with Sora. Roxas usually doesn't run into heartless he runs into nobodies.
cuz there would be no point in the game after you beat it. but to me i think the desiners are A-holes like that XP