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