for me at the time it was demon wall, i had no phoenix downs, potions e.t.c and my healer was killed quickly, a bit tough when you can't leave the temple to buy! not sure if there was a vendor in there, but im sure i had no gill either... even on the 2nd and third times i played the game, still tough to beat. i also had a few problems with dyne, cos my barret was never used in battles, i have a tendency to stay with the same charsacters for quite a while and he was weak! :)