Here is the full list of all 16 I commissioned some butterflies achievements.
Complete the game in its entirety.
Find everything hidden in the A Very Strange Jungle artwork.
Find everything hidden in the Wooden Basement Clutter artwork.
Find everything hidden in the Big Bunny Forest artwork.
Find everything hidden in the Football Match artwork.
Find everything hidden in the Collage Of Doodles artwork.
Find everything hidden in the Whale Shipwreck artwork.
Find everything hidden in the The Bookstore artwork.
Find everything hidden in the A Treacherous Climb artwork.
Find everything hidden in the Mountain Morning artwork.
Find everything hidden in the Wizard Island artwork.
Find everything hidden in the A Peaceful Glade artwork.
Find everything hidden in the The Sheep Pen artwork.
Find everything hidden in the Deep Sea Phone Box artwork.
Find everything hidden in the Plant Stairs artwork.
Find everything hidden in the Above Bookshelves artwork.