meanwhile, I'm disappointed for having enough trouble memorizing how to do the first 3 stages well (with "how to do" I mean "how it's possible to do", not really meaning that I did them well :p -- reaching the 6th boss with 1/5 of someone else's multiplier value should be enough to say how I'm not happy about my runs).. and still have so much to memorize on stages 4 and 5. So many missed medals, both of them easier to get (through well-placed reflects during the stages) and riskier than how I played..
Also, I felt cheated on my last death in my last playthrough. I was walled, never played through that part myself.
On the other hand, though, it's quite satisfying to have improved from 8 trillion to 21 trillion. May play this game some other time, after I calm down from being demotivated about trying to memorize stages 4, 5 and the 6th boss' patterns.