Here is the full list of all 32 Half Minute Hero: The Second Coming achievements.
Unlocked half of the quest titles in Overture.
Unlocked all 24 quest titles in Overture.
Unlocked half of the quest titles in Judgement.
Unlocked all 26 quest titles in Judgement.
Unlocked half of the quest titles in Revolution.
Unlocked all 44 quest titles in Revolution.
Unlocked half of the quest titles in Ragnarok.
Unlocked all 46 quest titles in Ragnarok.
Unlocked half of the quest titles in Destiny.
Unlocked all 14 quest titles in Destiny.
Found Evil Lord Medals 1-10.
Found Evil Lord Medals 11-20.
Found Evil Lord Medals 21-30.
Found Evil Lord Medals 31-40.
Found Evil Lord Medals 41-50.
Found Evil Lord Medals 51-60.
Found Evil Lord Medals 61-70.
Found Evil Lord Medals 71-80 and obtained all other "Beauty" achievements.
Unlocked "Return of the Hero" title.
Unlocked "Take Their Hand" title.
Unlocked "True Leader" title.
Unlocked "Fateful Reunion" title.
Unlocked "No. 30, The World" title.
Unlocked "Ultimate Tag Team" title.
Unlocked all DLC quest titles(6 total).
Unlocked "Goddess Loan Hero" title.
Unlocked "Debt Bird Buster" title.
Unlocked "Crafting Mania" title.
Unlocked "Three Venus" title.
Unlocked "Infinite Clear" title.
Unlocked "Infinite Master" title.
Listened to ALL of Coo's song.