Here is the full list of all 63 Angels with Scaly Wings achievements.
Keep the seashells.
Do well in all investigations in a single playthrough.
Do well on the third investigation.
Follow Vara.
Find a mysterious base.
Help Katsuharu.
Go to the portal.
Play a prank on Bryce.
Acquire a map.
Look at Remy's pictures.
Have two messages waiting for you at the same time.
Do well on the second investigation.
Look at everything the store has to offer.
Acquire the bloody bandage.
Appreciate the landscape.
Find a mysterious orb.
Find a handful of dirt.
Wait for Remy until you get bored.
Bring Remy's books into the correct order.
Get Adine to remove her headgear.
Do well on the first investigation.
Refuse to help Bryce 99 times.
Learn a lot about fruits.
Waste a perfectly good batch of eggs.
Drink a mysterious liquid.
Take a dragon dose of medication.
Read a bunch of books.
Order the daily special.
Give Anna your blood.
Answer Anna's questions correctly.
Reject Bryce's invitation.
Beat Sebastian at his own game.
Interrogate Damion.
Look at Anna's envelope.
Stretch your legs.
Examine Bryce's blanket.
Look at Bryce's magazine.
Listen to a bunch of music.
Meet with Emera.
Interrogate Anna.
Meet with Katsuharu.
Return the eggs to the hatchery.
Assemble the sphere.
Meet with Kevin.
Decide not to meet anyone or investigate 10 times.
Skip ahead 10 times.
Do a thing.
See what lies beneath the mask.
See your first ending.
See the neutral ending.
See Remy's bad ending.
See Remy's good ending.
See Anna's bad ending.
See Anna's good ending.
See Lorem's bad ending.
See Lorem's good ending.
See Bryce's bad ending.
See Bryce's good ending.
See Adine's bad ending.
See Adine's good ending.
See the evil ending.
See your first good ending.
See the true ending.