Here is the full list of all 32 Winged Sakura: Mindy's Arc achievements.
Bought your first bag
Completed Chapter 1
Obtained ten Data Fragments
Enchanted your first item
Crafted your first item
Completed the tutorial
Obtained a Data Fragment
Equipped 1 item
Cleared a level without losing a life
Unlocked all Cherry Blossoms
Cleared the game
Unlocked all Spirits
Obtained 100% on all Entrances
Reached level 99
All Spirits leveled up to 99
Cleared a level on Insane Mode
Learned ten crafting recipes
Crafted a SSS tier item
Enchanted an item to level 10
Enchanted a SSS tier item to level 10
Equipped 8 Weapons
Equipped 8 Weapons and 8 Accessories
Bought ten bags
Unlocked 8 Spirits
Completed waves 1-30 on Survival Mode
Completed waves 31-75 on Survival Mode
Completed waves 76-120 on Survival Mode
Completed Chapter 2
Completed Chapter 3
Completed Chapter 4
Saw the ending