Here is the full list of all 29 Please, Touch The Artwork 2 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Find all easel parts
Find all bottles
Repaired a hole in a painting
Find all buckets
Find all cats
Find all drinks
Find all crosses
Find all moustaches
Find all piano scores
Find all ray babies
Find all fruit
Find all vase pieces
Find all seashells
Find all matchsticks
Find the masked villan
Bring the masked man home
Find all seagulls
Find all paintbrushes
Check out the first game via the menu
Find and pet the dog
Play the piano and learn a famous song
Spot all 8 differences
Find Jezus' crown