| Achievement | How to unlock
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| Bearer of the Hat | Get the legendary hat from Manuel.
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| Betrayal End | Get this ending in the final section.
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| Eighth Battle | Complete this battle.
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| Eleventh Battle | Complete this battle.
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| Fifth Battle | Complete this battle.
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| Final End | Get this ending in the final section.
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| Fire Xenos Explorer | Visit the Fire Xenos.
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| First Battle | Complete this battle.
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| Fourth Battle | Complete this battle.
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| Furnace Xenos Explorer | Visit the Furnace Xenos.
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| Killer Discovery | Learn the killer's identity.
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| Light Xenos Explorer | Visit the Light Xenos.
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| Looking Loaded | Maximize your wealth through the story, then buy Stein clothes in Poli Ami.
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| Mountain Xenos Explorer | Visit the Mountain Xenos.
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| Ninth Battle | Complete this battle.
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| Puzzle 1A | Complete the Light Xenos puzzle.
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| Puzzle 1B | Complete the Mountain Xenos puzzle.
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| Puzzle 2A | Complete this puzzle in Throne Lodge.
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| Puzzle 2B | Complete the later puzzle in Throne Lodge.
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| Second Battle | Complete this battle.
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| Seventh battle | Complete this battle.
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| Silent Realm End | Get this ending in the final section.
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| Sixth Battle | Complete this battle or avoid it.
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| Tenth Battle | Complete this battle.
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| Third Battle | Complete this battle.
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| Tone Xenos Explorer | Visit the Tone Xenos.
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| Twelfth Battle | Complete this battle.
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| Void Xenos Explorer | Visit the Void Xenos.
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