Strive For Perfection G50:
Complete every Daily Challenge in a month.
You need to complete every challenge in a month (5 per day). For now, February 2021 is the best month to do as it only have 28 days and therefore only 140 challenges.
If you are having trouble with some challenges as they can be really hard, here is a playlist (credit goes to Zeming Jin) showing most of the daily challenges solutions :