Here is the full list of all 11 HENTAI SHERIFF achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
You've killed 100 enemies.
You've killed 90 enemies.
You've killed 80 enemies.
You've killed 70 enemies.
You've killed 60 enemies.
You've killed 50 enemies.
You've killed 40 enemies.
You've killed 30 enemies.
You've killed 20 enemies.
You've killed 10 enemies.
Dead or Alive.