Here is the full list of all 21 Perfect Gold - there are Yuri Visual Novel achievements.
Hold back with your affection.
Unlock all the achievements.
Seriously, you're not actually that concerned.
Assert your independence!
Get the romantic date ending.
Get the normal ending.
Celebrate the festival.
Embrace your yearning for someone.
Buy a gift for someone special.
Learn more about a renowned alchemist's past.
Offer to help a struggling mage.
Have a mage duel.
Attend a fancy alchemist ball.
Get to know young Marion.
Get sketched during an intimate moment.
Reach out for warmth and affection.
Get to know young Audrey.
Heal an injured mage.
When you're colder than the breeze you could've summoned...
Get that sweet, sweet freedom!
Make friends with the top alchemist.