Here is the full list of all 16 I commissioned some cats 0 achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Complete the game in its entirety.
Find everything hidden in the Frog Festival artwork.
Find everything hidden in the The Map Was Right artwork.
Find everything hidden in the Above Boardgame Night artwork.
Find everything hidden in the Monkey Market artwork.
Find everything hidden in the Launch Control Room artwork.
Find everything hidden in the Bread On Legs artwork.
Find everything hidden in the Piano Practice Room artwork.
Find everything hidden in the Friends For Tea artwork.
Find everything hidden in the The Little City artwork.
Find everything hidden in the Too Tired To Tidy artwork.
Find everything hidden in the Cozy Piano Cabin artwork.
Find everything hidden in the Fish Tables artwork.
Find everything hidden in the Crocodile Imposter artwork.
Find everything hidden in the Horse House artwork.
Find everything hidden in the Saturn Glow artwork.