Here is the full list of all 16 I commissioned some cats 7 achievements.
Complete the game in its entirety.
Find everything hidden in the Mushroom Community artwork.
Find everything hidden in the Sea Mechs artwork.
Find everything hidden in the Potion Making artwork.
Find everything hidden in the Crayon Park Stroll artwork.
Find everything hidden in the Cloudy Pool Resort artwork.
Find everything hidden in the Tasty Moon artwork.
Find everything hidden in the Red And Orange City artwork.
Find everything hidden in the Wormhole Lab artwork.
Find everything hidden in the Mountain Village artwork.
Find everything hidden in the Basement Furnace artwork.
Find everything hidden in the Emperor Meeting artwork.
Find everything hidden in the The Meat Market artwork.
Find everything hidden in the Summer Clothes Shopping artwork.
Find everything hidden in the Messy Bunk Desk artwork.
Find everything hidden in the Messy Cottage Sunrise artwork.