Difficulty is divided into small, medium, large, and extra large.
Each shot has a difficulty and the number of characters within
that difficulty.

Small - Very basic movement, maybe a jump. A shot with only small
difficulty should be doable by one person. Multiple characters
can be positioned by the player's attacks, throws, or nudging.

Medium - Slightly skilled movement. Most decent players should be
able to do medium difficulty easily, but may require additional
players for additional medium characters.

Large - Capital L cuz the difficulty is large. Requires advanced
skill or coordination.

xl - extraordinarily difficult. Bring your A game and be prepared
for the long haul.