Here is the full list of all 16 I commissioned some mice 4 achievements.
Complete the game in its entirety.
Find everything hidden in the Cauldron Chaos artwork.
Find everything hidden in the Procrastinating On Laundry artwork.
Find everything hidden in the Washing Up Piles artwork.
Find everything hidden in the So Many Vegetables artwork.
Find everything hidden in the Cat Stretch artwork.
Find everything hidden in the Do We Need Leek artwork.
Find everything hidden in the Outdoor Fry Up artwork.
Find everything hidden in the Hobby Chair At Sunset artwork.
Find everything hidden in the Spacecraft Hangar Controls artwork.
Find everything hidden in the Angry Animal Paradise artwork.
Find everything hidden in the Unpacking Living Room artwork.
Find everything hidden in the Unusual Vending Machine artwork.
Find everything hidden in the Honey On The Path artwork.
Find everything hidden in the Ice Cream Parlour artwork.
Find everything hidden in the Messy City Street artwork.