| Achievement | How to unlock
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| A Fleeting Chance | Complete Shonen-Doll's Character Arc.
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| A Pure Girl | Complete Wicked's Character Arc.
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| A Reason to Go Home | Complete all Go-Home Club members' Character Episodes.
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| A World, Surrounded by Close Friends | Accumulate over 100 friends with ? Affinity.
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| A World, Surrounded by Friends | Accumulate over 100 friends.
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| After the Moratorium | Complete Kagi-P's Character Arc.
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| Archetypal Self | Complete Ike-P's Character Arc.
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| Beginning of the End | Clear a melee battle.
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| Celestial Justice | Complete Shadow Knife's Character Arc.
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| Chat Pro | Send group WIRE messages over 10 times.
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| Desire and Discipline | Complete Stork's Character Arc.
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| Feelings Caged in Song | Complete all Ostinato Musicians' Character Arcs.
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| First Job | Clear the Mifue and Ayana battle.
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| Friend Groupie | View your field WIRE over 10 times.
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| Friends in a Past Life | Exterminate the Go-Home Club.
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| Global Investigator | Solve all Enigmas.
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| Glory Days Bygone | Complete Mirei's Character Arc.
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| Go-Home Club Activities START! | Begin activities as part of the Go-Home Club.
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| Hidden Powers Activated | Experience your first battle.
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| In Search of Your Individuality | Complete Sweet-P's Character Arc.
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| In the Depths of Your Heart | Complete a person's Character Episode.
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| One Who Reverts All to Zero | Complete Aria's Character Arc.
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| Pervert Trio | Clear the Suzuna and Naruko battle.
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| President's Decision | Banish Eiji from the Go-Home Club.
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| Reason for Hate | Clear the Kotono and Eiji battle.
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| Rebirth | Complete the main story with both the male and female protagonist.
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| Scars Left Behind | Collect over 300 Stigmas.
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| School Sleuth | Solve the mystery of the 21-class leader.
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| The Caligula Effect: Overdose | Acquire all achievements.
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| The Truth Unseen | Complete Kuchinashi's Character Arc.
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| This Unwavering Feeling | Complete Thorn's Character Arc.
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| Two Different Perspectives | Begin activities as part of the Ostinato Musicians.
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| Unfortunate Charisma | Clear the Shogo and Izuru battle.
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| Welcome to Mobius! | Answer µ's call.
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| What is Lo--uh, Strength? | Raise the protagonist's level to higher than 50.
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| Wishes' End | Complete µ's Character Arc.
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| µ's Wish | Complete µ's Remnant Episodes.
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