Here is the full list of all 24 Fearless Fantasy achievements.
Defeat he boss of Harrow Forest on veteran difficulty without consuming items
Achieve 50 epic results in a row without aim enhancers
Collect all of the stars
Collect at least two stars in every chapter
Defeat the boss of Gyoza Desert on veteran difficulty without consuming items
Defeat the boss of Leuna Forest on veteran difficulty without consuming items
Break up an engagement
Receive a private audience with his royal highness
Defeat the king's lackey.. one last time
Survive an encounter with Hew and his ride
Defeat the king's lackey.. once again
Gain possession of a lethal liquid
Defeat the king's lackey.. again
Crash a suspicious party
Slay a five-headed monster
Meet a friend
Defeat the king's lackey
Achieve 20 epic results in a row without aim enhancers
Achieve 3 epic results in a row without aim enhancers
Kidnap a mysterious girl
Beat all chapters without being defeated or repeating a chapter
Beat all chapters on normal difficulty or above without being defeated or repeating a chapter
Beat all chapters on veteran difficulty without being defeated or repeating a chapter
Defeat the final boss on veteran difficulty without consuming items