Here is the full list of all 13 My Secret Pets achievements.
Completed the Prologue.
Completed with "Assam" Happy Ending.
Completed with "Assam" Miracle Ending.
Completed with "Lufna" Happy Ending.
Completed with "Lufna" Miracle Ending.
Completed with "Ramin" Happy Ending.
Completed with "Ramin" Miracle Ending.
Completed with "Lize" Happy Ending.
Completed with "Lize" Miracle Ending.
Completed with "Reito" Happy Ending.
Completed with "Reito" Miracle Ending.
Completed with All Endings.
Completed All Main Scenarios, Sequels, and Date Scenarios.