An idea which is either stupid or stupendous.

A self-imposed challenge to beat all of a set of levels in order without dying once. This won't apply to entire categories, only subcategories.

Ex: Maybe try doing Platinum Expert (Stamina to Battlecube Finale) or doing any of the leaderboard packs without dying.

It will be a brutal test of endurance and level knowledge. Speedrunning would be super risky.