| Achievement | How to unlock
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|---|
| Always Prepared | Used the Gas Mask.
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| Aromatherapy | Found the Spectral Incense.
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| Dark Secrets | Solved Da-hyun's 2nd mission.
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| Dark Song | What sharp teeth you have!
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| Denizens of the Dark | Talked to a Noteman.
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| Dokkaebi Merchant | I've come to bargain!
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| Fighting Fit | Entered the inner gymnasium.
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| Ghost Vigilante Rising | Unlocked Ending A.
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| Heart of Darkness | Entered The Coma.
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| I Prefer it Well-Done | Used the Taser.
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| I'm Invincible! | Took 4 permanent damage.
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| I've Had Worse | Took 2 permanent damage.
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| It's a Trap! | Used the Caltrops.
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| Just a Flesh Wound | Took 3 permanent damage.
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| Mysterious Student | Met Yaesol in the security room.
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| Night Flight | Escaped Sehwa High.
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| No Trespassing | Entered the Headmaster's office.
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| On the Mend | Cured Yaesol.
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| Past Revealed | Solved Da-hyun's 3rd mission.
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| Purification Ritual | Sanctified the Moon Incense.
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| RC Car Driver | Used the Mobile Decoy.
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| Romancing the Stone | Found the Blood Ruby.
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| Saved by the Bell | Solved Da-hyun's 1st mission.
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| Surviving the Fallout | Found Youngho's secret bunker.
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| Teacher's Pet | Talked to Ms. Song.
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| The Backpacker | Found the Urban Utility Backpack.
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| The Exorcist | Found the Holy Water of Separation.
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| The Ghost Vigilantes | Met all Ghost Vigilantes.
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| The Great Sacrifice | Unlocked Ending B
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| The Shade Story | Collected all Torn Pages.
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| Ticket to Ride | Escaped from Songreung Station.
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| Time Served | Escaped from the Police Office.
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| Tis But a Scratch | Took 1 permanent damage.
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| Vicious Sisters | Started the game.
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| What's Up, Doc? | Escaped from Sehwa hospital.
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