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.
Defeated the Cyclops Plant using only Pike Balls.
Destroy 20 bones with the Bubble Shield.
Defeated the Pirate Master's true form without taking any damage.
Defeated the Pirate Master without taking damage.
Sample the entire menu!
Defeat the Pirate Master's true form.
Defeated the Pirate Master.
Collect all Heart Squids.
Collect all of the Dark Magic.
Discover the secret Labyrinth.
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.
Obtain the Spirit from Abner.
Play keep away with the Ammo Baron.
Defeated Dagron without taking damage.
Defeated Dagron.
Defeat 50 enemies using Pirate Weapons.
Collect 50% of the Heart Squids.
Obtain Manly Musk.
Obtain the Fossil.
Collect 50% of the Dark Magic.
Collect the Enchanted Blade.
Defeated the Squid Baron without taking damage.
Defeated the Squid Baron.
Obtain the Golden Pickaxe.
Obtain all three Mummy Sketches.
Use a Pirate Flare to return to Risky's ship.
Defeated the Empress Spider.
Defeated the Empress Spider without taking damage.
Destroy 10 Spider Eggs before they hatch.
Obtain Squid Oil.
Get Rottytops to Abner Tree without making any mistakes in a single attempt.
Defeated the Cyclops Plant without taking damage.
Defeated the Cyclops Plant.
Defeat 250 enemies using Shantae's Monster Whipper!
Release the Ham Stink.
Defeated the Ammo Baron.
Defeated the Ammo Baron without taking any damage.