Here is the full list of all 11 I commissioned some bees 2 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Completed the game in its entirety
Find everything hidden in the Panda artwork.
Find everything hidden in the Mech artwork.
Find everything hidden in the Critters artwork.
Find everything hidden in the Theme park artwork.
Find everything hidden in the Overgrown artwork.
Find everything hidden in the Canal artwork.
Find everything hidden in the Isles artwork.
Find everything hidden in the Imagination artwork.
Find everything hidden in the Space Bees artwork.
Find everything hidden in the Zoo artwork.