I looked at the current categories in this game, and I noticed two overlaps in gameplay:

-"Hard Boiled Hard" is played as a part of "All Character Unlocks" because it's how you unlock Yolkohama. -"Bomb Mode" allows any difficulty setting, but completing it on Medium or Hard also unlocks characters. (Sir Eggolot and Poncho)

We have two speedrun categories which can help in practicing a run of ACU. This makes me wonder: Could we have a category based on reaching 1 million points in Solo as fast as possible? This is also the requirement for unlocking Angelica.