Do you mean CRAZY! and not Difficult? cause on Difficult the difficulty curve is far too gentle. On CRAZY! it's just a tad too slow to get started for my taste; after the first few stages it's joyous.
EDIT: Indeed, you must have meant CRAZY!, because I very nearly beat stage 30 on Difficult, on my first solo attempt at that.
EDIT: Indeed, you must have meant CRAZY!, because I very nearly beat stage 30 on Difficult, on my first solo attempt at that.