Here is the full list of all 16 I commissioned some snails achievements.
Complete the game in its entirety.
Find everything hidden in the Eye Of The Future artwork.
Find everything hidden in the Bike On Fence artwork.
Find everything hidden in the Mushroom Stew artwork.
Find everything hidden in the Japanese Sunset Market artwork.
Find everything hidden in the Adventuring Through A Swamp artwork.
Find everything hidden in the Wildflower Path artwork.
Find everything hidden in the Vocalist Concert artwork.
Find everything hidden in the Potting Shed artwork.
Find everything hidden in the Really Good Book artwork.
Find everything hidden in the Gigantic Forest artwork.
Find everything hidden in the Pink And Purple Bedroom artwork.
Find everything hidden in the Lily Pad Conservatory artwork.
Find everything hidden in the Fancy Restaurant artwork.
Find everything hidden in the Space Launch Day artwork.
Find everything hidden in the Dog Cafe artwork.