Here is the full list of all 18 The Amazing Shinsengumi: Heroes in Love achievements.
Completed All Main Scenarios, Sequels, and Date Scenarios.
Completed with "Heisuke" Crimson.
Completed with All Endings.
Completed with "Heisuke" Embers.
Completed with "Heisuke" Ignition.
Completed with "Sanosuke" Crimson.
Completed with "Sanosuke" Embers.
Completed with "Sanosuke" Ignition.
Completed with "Shinpachi" Crimson.
Completed with "Shinpachi" Embers.
Completed with "Shinpachi" Ignition.
Completed with "Hajime" Crimson.
Completed with "Hajime" Embers.
Completed with "Hajime" Ignition.
Completed with "Soji" Embers.
Completed with "Soji" Ignition.
Completed with "Soji" Crimson.
Completed the Prologue.