Board Thread:Questions and Answers/@comment-96.48.163.83-20150723164057/@comment-24032096-20160401221040

It's when the combo bar reaches x6 and never drops a level. Things that does not have to do, for example, are:


 * x1 - x2 - x3 - x4 - x5 - x6 - x5 - x6


 * x1 - x2 - x3 - x4 - x3 - x4 - x5 - x6

If something like this happens, it will not say "Perfect".