Board Thread:Questions and Answers/@comment-96.48.163.83-20150723164057/@comment-5838632-20150725015429

A "perfect" score simply means completing a scene without the combo bonus meter ever dropping. That can either be starting a scene, building it up to x6 and it never dropping, or starting with the x6 combo booster and it never dropping. You basically have to find all the items in very quick succession.