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