Here is the full list of all 116 Winged Sakura: Endless Dream achievements.
Completed a Cecilia Hostess Event
Researched a new Tower or Generator
Found the arcade room
Get a free item from Cecilia
Unsealed Monica
Unsealed Claire
Viewed Mocha's Story Event
Unsealed Mocha
Viewed Elva's Story Event
Unsealed Elva
Viewed Lila's Story Event
Viewed all Tutorial Events
Unsealed Lila
Complete a Dream World with Mimi at 100% HP
Change your main element
Completed the Prologue
Unlocked all other Achievements
Viewed all Main Story Events
Viewed all of Cecilia's Side Story Events
Viewed all of Mindy's Side Story Events
Viewed all of Minzy's Side Story Events
Viewed all of Nino's Side Story Events
Viewed all of Lulu's Side Story Events
Viewed all Side Stories Events
Viewed all Sakura Stories Events
Viewed Claire's Story Event
Viewed Monica's Story Event
Unsealed Erika
Viewed Erika's Story Event
Unsealed Luciella
Viewed Luciella's Story Event
Unsealed Jessi
Viewed Jessi's Story Event
Unsealed Agni
Viewed Agni's Story Event
Unsealed Devi
Viewed Devi's Story Event
Unsealed Nova
Viewed Nova's Story Event
Unsealed Anna
Viewed Anna's Story Event
Unsealed Chilli
Viewed Chilli's Story Event
Unsealed Spectre
Viewed Spectre's Story Event
Unsealed Eira
Viewed Eira's Story Event
Unsealed Glacier
Viewed Glacier's Story Event
Unsealed Crystal
Viewed Crystal's Story Event
Unsealed Lilu
Viewed Lilu's Story Event
Unsealed Haley
Viewed Haley's Story Event
Unsealed Thora
Viewed Thora's Story Event
Unsealed Tullie
Viewed Tullie's Story Event
Unsealed Leo
Viewed Leo's Story Event
Unsealed Kitsu
Viewed Kitsu's Story Event
Unsealed Telli
Viewed Telli's Story Event
Unsealed Lola
Viewed Lola's Story Event
Unsealed Serah
Viewed Serah's Story Event
Unsealed Poi
Viewed Poi's Story Event
Unsealed Skele
Viewed Skele's Story Event
Unsealed Pimmi
Viewed Pimmi's Story Event
Unsealed Faye
Viewed Faye's Story Event
Unsealed 10 Sakuras
Unsealed 20 Sakuras
Unsealed 30 Sakuras
Play as Mindy 10 Times
Beat any Stage on Normal or Hard Mode as Mindy
Play as Minzy 10 Times
Beat any Stage on Normal or Hard Mode as Minzy
Play as Nino 10 Times
Beat any Stage on Normal or Hard Mode as Nino
Play as Lulu 10 Times
Beat any Stage on Normal or Hard Mode as Lulu
Increase Mindy's level to 10 on any Stage on Normal or Hard Mode
Increase Minzy's level to 10 on any Stage on Normal or Hard Mode
Increase Nino's level to 10 on any Stage on Normal or Hard Mode
Increase Lulu's level to 10 on any Stage on Normal or Hard Mode
Increase any character's level to 10 on any Stage on Normal or Hard Mode
Equip 4 Boosters
Acquire a Booster from a Seduced Cecilia
Buy a Booster
Upgraded a Tower or Generator
Upgraded a Tower or Generator to max level
Beat any Stage on Normal or Hard Mode
Beat any Stage on Hard Mode
Tried Survival Mode
Beat a Dream World without building an offensive tower
Equip 5 Sakuras
Encountered and defeated a shadow robot
Replay a Story Event in the Journal Menu
Equip 4 matching Boosters. All four Boosters have to be the same element and matches a Supporter's element
Equip 4 matching Boosters. All four Boosters have to be the same element and matches a Supporter and Operator's element
Destroy a Hackbot while it's hacking a Door
Beat the Endless Dream Stage on Normal or Hard Mode
Beat the Ice & Poison Stage on Normal or Hard Mode
Beat the Ice & Fire Stage on Normal or Hard Mode
Beat the Fire & Lightning Stage on Normal or Hard Mode
Beat the Fire & Poison Stage on Normal or Hard Mode
Beat all Stages on Normal or Hard Mode
Viewed a CG in the Journal Menu
Fast travel without accessing the Map Menu by clicking on the mini-map