I have to extend my thanks to all those fellows who gave me more tips for the Lingering Will.
Lol, I finally managed to defer that pile of scrap metal to the junkyard with the Fenrir strategy, finally gaining all four trophies related to it (I had all the other tasks in Jiminy's journal already completed months ago).
Something that leaves me a little head-scratching is however that the Lingering Will is only a silver trophy while the Org XIII-Data is a gold one. The Org XIII-Data, while undoubtly hard, is still easier than the Lingering Will.
Now all that remains is to defeat Xemnas again to get the birth by sleep-secret ending and then perform a (story)-playthrough on Critical difficulty for KH 2 FM (I always do my first playthrough on Proud) in order to get platinum.
Then I can finally start with BBS itself...^__^
@Chuman:
Sorry bro, but Drive Recovery orbs can only be used from the menu and I do not think you get a chance to go into the menu between the waves of Nobodies in the Cavern of Remembrance.
If you could go into the menu between waves, you could also fully heal up the whole party by using a tent.
Glad you finally managed to beat that sadistic pile of metal. He was always one of the most difficult bosses in the series due to the insane number of attacks that you have to read in order to beat him.
Gotta say, though, once you get to Birth by Sleep and you beat Keepers in the Arena as Terra, it is going to be downright cathartic using the Ultima Cannon as a shotlock (assuming just playing as the Lingering Will against Terranort wasn't already this).