First you choose a simple level where you get alot of orbs,(I chose
Level 3 Cause of the phantom). Then after you got all the orbs press
select then save your game, then reset. play that same level over and
over and each time you save and rest, you save the number of orbs, so
you can buy cool stuff. it is time consuming and its not helpful on
your rank on that level but it does make the game alot easier to
complete.