Here is the full list of all 9 My Butler achievements.
Completed with All Endings.
Completed All Main Scenarios, Sequels, and Date Scenarios.
Completed with "Makoto" Normal Ending.
Completed with "Makoto" Happy Ending.
Completed with "Yosuke" Normal Ending.
Completed with "Yosuke" Happy Ending.
Completed with "Shohei" Normal Ending.
Completed with "Shohei" Happy Ending.
Completed the Prologue.