Here is the full list of all 32 Made in Abyss: Binary Star Falling into Darkness achievements.
Obtained Relic for the first time.
Reach the first layer the first time.
Obtain all achievements.
Clear HELLO ABYSS.
Become a Red Whistle.
Become a Blue Whistle.
Become a Moon Whistle.
Become a Black Whistle.
Become a White Whistle.
Clear DEEP IN ABYSS.
Clear Rikofs episode.
Clear Regfs episode.
Defeat Detchuanga.
Receive Nanachi's best dish review.
Reach the second layer the first time.
Reach the third layer the first time.
Reach the fourth layer the first time.
Reach the fifth layer the first time.
Visit over 40 stages.
Cook a dish for the first time.
Craft something for the first time.
Collected Information with the Monocular for the first time.
Collected 10 Relics.
Collected 50 Relics.
Collected 100 Relics.
Collected 200 Relics.
Learn a new skill for the first time.
Unlocked 10 skills.
Unlocked 30 skills.
Unlocked 50 skills.
Be affected by ascension strains.
Suffer the 1st to 5th layerfs strains.