Here is the full list of all 9 Point of Mew achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Get out, have fun and make a new friend.
Find all the boat figureheads.
Not even the flying creatures are safe.
Find all the boat bases.
Find all the boat sails.
Find all the boat captains.
Find the legally distinct big hair creature.
Find all treats and "deal" with them.
Peace was never an option.