Here is the full list of all 40 Shantae and the Seven Sirens achievements.
Complete the adventure!
Complete the adventure as quickly as possible!
Complete the adventure with 100% completion as quickly as possible!
Complete the adventure with 100% completion!
Defeated the Empress Siren.
Complete the game without any Health upgrades and all Heart Squids collected.
Open all Shock Machines.
Unearthed all secrets.
Collect all Monster Cards.
Revitalize cellular functions.
Deactivate all the Towers.
Turn an enemy to an ally by helping them heal.
Avoid startling the Lobster Girl throughout the adventure.
Defeated the fifth Siren.
Obtain all magical forms.
Shock a circus squid.
Unearth a buried treasure.
Witness every magical outcome with Slimes.
Complete a Ghostly Quest.
Learn all magical dances.
Open a Shock Machine.
Defeated the fourth Siren.
Locate the sunken ship remains.
Fell for a double cross.
Upgrade all magic to max.
Ascend to Armor Town.
Defeated the third Siren.
Enter the Sea Lab.
Obtain the Lucky Amulet.
Defeated the second Siren.
Use the valve.
Uncovered a possible threat.
Win the highest total in a Hula Contest.
Reach Tree Town.
Defeated the first Siren.
Have three Monster Cards equipped at once.
Took the tour!
Obtain a Monster Card.
Complete the game in Beginner or Definitive Mode.
Complete the game in Rule Breaker or Full Deck Mode.