My friend had the game and I was at his, it was KH1. At the time i had never heard of KH at all, but this me playing KH1 for the first time led to 100% completion of jiminys journal when i got KH2 :)
Im having problems with the agrabah flying carpet challenge :/
i swear ive killed EVERY monster AND done the thing were u repeatedly press so and so to make the 2 at the start show up.
and btw,
when you complete the journal do u have to complete proud mode xemnas to see the secret ending or do i just have to redo xemnas on normal :)
If he did have duel wield, then i would think you should be able to get it once you complete, i dunno like normal mode, and it will allow you to use it in something like proud mode.. seeing as they probaly will be a big difference in hardness in the next KH.
Are you talking about a game like once you have completed you will still find fun to play afterwards or a long story line?
Long story Line: Not really many out ther now you think about it >.< only one i can think of thats the longest that took me to complete was assassins creed.