Full list of all 103 Secret Pie achievements.
The base game contains 48 achievements, and there are 3 DLC packs containing 55 achievements.
Mei Favorability 6
Mika Favorability 6
Airi Favorability 6
Chapter 1 clear
Chapter End
Chapter 18 clear
Chapter 17 clear
Mei ♀♂♥ Chapter3 Clear
Chapter 16 clear
Mei Favorability 5
Airi ♀♂♥ Chapter3 Clear
Chapter 15 clear
Airi Favorability 5
Airi Favorability 4
Mika ♀♂♥ Chapter3 Clear
Chapter 14 clear
Mika Favorability 5
Mika Favorability 4
Mei ♀♂♥ Chapter2 Clear
Chapter 13 clear
Mei Favorability 4
Mei Favorability 3
Chapter 12 clear
Mika Favorability 3
Airi ♀♂♥ Chapter2 Clear
Chapter 11 clear
Airi Favorability 3
Mika ♀♂♥ Chapter2 Clear
Chapter 10 clear
Mika Favorability 2
Chapter 9 clear
Airi Favorability 2
Mei ♀♂♥ Chapter1 Clear
Chapter 8 clear
Mei Favorability 2
Chapter 7 clear
Chapter 6 clear
Airi Favorability 1
Chapter 5 clear
Chapter 4 clear
Mei Favorability 1
Mika ♀♂♥ Chapter1 Clear
Chapter 3 clear
Mika Favorability 1
Airi ♀♂♥ Chapter1 Clear
SecretPie Start!
Chapter 2 clear
SecretPie Play!
Lina ♀♂♥ Chapter3
DLC1 Chapter 8 clear
Yui ♀♂♥ Chapter2 clear
DLC1 Chapter 7 clear
Ran ♀♂♥ Chapter3 clear
DLC1 Chapter 6 clear
Lina ♀♂♥ Chapter2 clear
DLC1 Chapter 5 clear
Yui ♀♂♥ Chapter1 clear
DLC1 Chapter 4 clear
Ran ♀♂♥ Chapter1 clear
DLC1 Chapter 3 clear
Lina ♀♂♥ Chapter1 clear
DLC1 Chapter 2 clear
DLC1 Chapter 1 clear
Start SecretPie Festival
Mary ♀♂♥Chapter1 clear
DLC2 Chapter 10 clear
Sia Sea ♀♂♥Chapter3 clear
DLC2 Chapter 9 clear
DLC2 Chapter 8 clear
Sia Sea ♀♂♥Chapter2 clear
DLC2 Chapter 7 clear
Io ♀♂♥ Chapter2 clear
DLC2 Chapter 6 clear
DLC2 Chapter 5 clear
Io ♀♂♥ Chapter1 clear
DLC2 Chapter 4 clear
DLC2 Chapter 3 clear
Sia Sea ♀♂♥Chapter1 clear
DLC2 Chapter 2 clear
DLC2 Chapter 1 clear
Start Hidden Room
Start End Roll
DLC3 Chapter 1 clear
DLC3 Chapter 2 clear
DLC3 Chapter 3 clear
DLC3 Chapter 4 clear
DLC3 Chapter 5 clear
DLC3 Chapter 6 clear
DLC3 Chapter 7 clear
DLC3 Chapter 8 clear
DLC3 Chapter 9 clear
DLC3 Chapter 10 clear
DLC3 Chapter 11 clear
DLC3 Chapter 12 clear
Elizabeth ♀♂♥Chapter1
Mizuki ♀♂♥Chapter1
Siori ♀♂♥Chapter1
Elizabeth ♀♂♥Chapter2
Mizuki ♀♂♥Chapter2
Siori ♀♂♥Chapter2
Mizuki ♀♂♥Chapter3
Elizabeth ♀♂♥Chapter3