Here is the full list of all 38 Meltys Quest achievements.
Get the Pure Ending while in Princess Mode.
Defeat the final boss on True Princess Mode.
Face the first boss of True Princess Mode.
Obtain the secret outfit.
View the hidden ending.
Got Milk?
Give life twenty times.
Oh hey, didn't see you there.
Defeat the final boss while only using Love Shot or Love Wave to do damage to the final boss.
Wear the JK Clothes.
Slay a relic of the past.
Save the world.
Time to kick some butt!
Achieve bliss a total of 100 times or more.
Pointless, useless, futile, meaningless.
Wear only what you were born with.
Learn a Skill from using an Item.
Complete the rebuild of Castle Rothstein.
Wear Melty's new favorite battle outfit.
Help someone prepare for their graduation.
Pick the fourth option while talking to Zanelli.
Read Garnet's letter.
Defeat a chicken. Wow.
Cannonball!!
Wear the Nurse Uniform.
Mine an iron ore.
You lost on purpose didn't you.
Give the Red Potion to Rudolf.
Have exactly 7 in all three cream related experiences.
Meet the wandering swordsman while having done the oldest profession in the game five times or more.
See all six endings.
Defeat the secret boss on True Princess Mode.
Obtain the sword of a king.
Defeat Dark Globbers while only using Love Shot or Love Wave to do damage.
Mano a Mano Defeat Dark Limey using only Strike skills, Guard or Items.
Defeat Dark Lilf while wearing an Apron.
Let Dark Pietra defeat herself.
Defeat D.M.U. on True Princess mode without retreating during the fight.