Here is the full list of all 14 Captain Pawsome achievements.
Appease a mysterious creature
Sell a total of 50 artifacts
Help the chef prepare the best meal in the world
Gift the necklace to the Siren
Restore power to the town
Retrieve the crystal from Atlantis
Learn the secrets of the universe
Retrieve an heirloom to get the artisans help
Defeat the monster
Gain a total of 500 000 gold
Upgrade the ship and fishing rod to the max level
Collect 15 different pieces of clothing
Collect every piece of clothing