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