well you're in luck because i'm the dw4 master:D:P
that seven star sash is a must but you'll need a lot of luck to get the orbs
it took me a long time to get them
they're not that special or essential.
you'll have more luck when u have the seven star sash equipped and when your difficulty is set at hard
good luck:D
p.s just keep playing it for fun and don't think about those orbs to much, you'll get them eventually