Successfully complete the indicated task to unlock the corresponding achievement.
| Achievement | How to unlock
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| - Finished Chapter 15, "A Holographic Reflection".
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| - Finished Chapter 14, "At the End of the Battle".
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- At the Rift in the Quarantine Wall
| - Finished Chapter 12, "At the Rift in the Quarantine Wall".
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- Leaving the Planetarium Behind
| - Finished Chapter 9, "Leaving the Planetarium Behind".
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- Planetarian ~the reverie of a little planet~
| - Completed planetarian ~the reverie of a little planet~.
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| - Finished Chapter 4, "Repairing the Projector".
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- The Battle Against the Fiddler Crab
| - Finished Chapter 13, "The Battle Against the Fiddler Crab".
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- The City 1 (The Abandoned Streets)
| - Finished Chapter 10, "The City 1 (The Abandoned Streets)".
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- The City 2 (Drunk with Alcohol and Rain)
| - Finished Chapter 11, "The City 2 (Drunk with Alcohol and Rain)".
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- The End of Repairs / Before the Projection
| - Finished Chapter 6, "The End of Repairs / Before the Projection".
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- The Junker's Reverie 1 / At Reception
| - Finished Chapter 3, "The Junker's Reverie 1 / At Reception".
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- The Junker's Reverie 2 / Light Bulbs
| - Finished Chapter 5, "The Junker's Reverie 2 / Light Bulbs".
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- The Reverie of Mankind Spreading its Wings
| - Finished Chapter 8, "The Reverie of Mankind Spreading its Wings".
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| - Finished Chapter 1, "The Robot's Bouquet".
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- The Sealed City and the Junker
| - Finished Chapter 2, "The Sealed City and the Junker".
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| - Finished Chapter 16, "Yumemi's Prayer".
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| - Finished Chapter 7, "Yumemi's Projection".
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