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