Here is the full list of all 44 Shantae and the Pirate's Curse achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Defeat the Pirate Master's true form and save Scuttle Town in record time!
Saved Scuttle Town as fast as possible!
Complete the game without any Health upgrades and all Heart Squids collected.
Defeat the Pirate Master's true form.
Defeated the Pirate Master's true form without taking any damage.
Collect all Heart Squids.
Collect all of the Dark Magic.
Defeated the Pirate Master.
Defeated the Pirate Master without taking damage.
Complete the hidden training room.
Defeated the Steel Maggot without taking damage.
Defeated the Steel Maggot.
Collect all Labyrinth maps.
Help Ammo Baron fire the Palace Disruptor Cannon.
Play keep away with the Ammo Baron.
Obtain the Spirit from Abner.
Collect the Enchanted Blade.
Discover the secret Labyrinth.
Defeated Dagron without taking damage.
Defeated Dagron.
Obtain Manly Musk.
Obtain the Fossil.
Collect 50% of the Heart Squids.
Collect 50% of the Dark Magic.
Defeated the Squid Baron without taking damage.
Defeated the Squid Baron.
Obtain the Golden Pickaxe.
Obtain all three Mummy Sketches.
Sample the entire menu!
Defeat 50 enemies using Pirate Weapons.
Defeated the Empress Spider without taking damage.
Destroy 10 Spider Eggs before they hatch.
Defeated the Empress Spider.
Destroy 20 bones with the Bubble Shield.
Get Rottytops to Abner Tree without making any mistakes in a single attempt.
Obtain Squid Oil.
Defeated the Cyclops Plant without taking damage.
Defeated the Cyclops Plant.
Defeated the Cyclops Plant using only Pike Balls.
Defeat 250 enemies using Shantae's Monster Whipper!
Release the Ham Stink.
Use a Pirate Flare to return to Risky's ship.
Defeated the Ammo Baron.
Defeated the Ammo Baron without taking any damage.