Here is the full list of all 38 Meltys Quest achievements.
See all six endings.
Defeat D.M.U. on True Princess mode without retreating during the fight.
Mano a Mano Defeat Dark Limey using only Strike skills, Guard or Items.
Defeat Dark Lilf while wearing an Apron.
Defeat Dark Globbers while only using Love Shot or Love Wave to do damage.
Defeat the secret boss on True Princess Mode.
Obtain the sword of a king.
Defeat the final boss on True Princess Mode.
Face the first boss of True Princess Mode.
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.
Let Dark Pietra defeat herself.
View the hidden ending.
Got Milk?
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.
Obtain the secret outfit.
Give life twenty times.
Wear the JK Clothes.
Get the Pure Ending while in Princess Mode.
Pointless, useless, futile, meaningless.
Slay a relic of the past.
Achieve bliss a total of 100 times or more.
Save the world.
Time to kick some butt!
Defeat a chicken. Wow.
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.
Pick the fourth option while talking to Zanelli.
Read Garnet's letter.
Help someone prepare for their graduation.
Cannonball!!
You lost on purpose didn't you.
Wear the Nurse Uniform.
Mine an iron ore.
Give the Red Potion to Rudolf.