Here is the full list of all 16 I commissioned some cats 8 achievements.
Complete the game in its entirety.
Find everything hidden in the Guarded Ocean Treasure artwork.
Find everything hidden in the Lazy Boating artwork.
Find everything hidden in the Dogs And Ice Cream artwork.
Find everything hidden in the Tortoise And Hare Race artwork.
Find everything hidden in the Alien Bunks artwork.
Find everything hidden in the Dragon Visit artwork.
Find everything hidden in the Leafy Alleyway artwork.
Find everything hidden in the Creepy Ocean Cabin artwork.
Find everything hidden in the The Species Escaped artwork.
Find everything hidden in the The Boat Docks artwork.
Find everything hidden in the Summer Alleyway artwork.
Find everything hidden in the Robotic Claw Farming artwork.
Find everything hidden in the Mech Testing Facility artwork.
Find everything hidden in the Exotic Aquarium Chest artwork.
Find everything hidden in the Pumpkin House At Dusk artwork.