Thanks for the detailed feedback! The efficiency and configure score are the same thing (I didn't realize we used different names for it lol). The overall efficiency is calculated by multiplying the three scores of the levels (for example if you have 80% at every level the overall score would be 0.8 * 0.8 * 0.8 = 0.512 = 51%). The collectables could've been harder but we decided to make them easy since they are essential for making progress and not completely optional like celestes strawberries.