The What Lies Beeneath Title update for APICO has 15 achievements.
Catch yourself your first fish
Complete half of the Captain's Board
Complete all of the Captain's Board
Discover all bumblebee variants of fish
Catch a... fish? I think?
Refine sludge to find a little treat
Refine sludge to find all 6 little treats
Restore the red ruby coral reef
Restore the green emerald coral reef
Restore the yellow topaz coral reef
Dive down into the depths of the ocean...
Clean up one of the patches of sludges on the sea floor
Clean up all patches of sludge on the sea floor
Descend, and descend again...
Commune with an emmisary...