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