| Achievement | How to unlock
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| A Name to a Face | Discover the name of every possible character in Dwindling Heights.
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| All Skilled Up | Learn all skills in the adventure.
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| Arachnophobia | Rid Dwindling Heights of all spiders.
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| Crash Diet | Complete the game without ever eating to regain energy.
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| Dodgy Mouse | Complete the game without getting hit by an enemy.
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| End to End | Reach the end of the game.
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| Gusto and Fatale | Complete all of Gusto and Fatale's quests.
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| Handker-thief | Steal all of the Rat Guards' handkerchiefs.
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| Lake Shore | Reach the desolate shore.
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| Like a Ghost | Complete the game without alerting any guards.
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| Lore Master | Finish every secondary quest.
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| Lost Hope Found | Discover Duinlan's tomb.
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| Play All | Play all songs during the course of the game.
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| The Arsonist | Set fire to all inflammable items in Dwindling Heights.
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| The Draught | Open all window shutters.
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| The Golden Suit | Complete the full set of Duinlan's armour.
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| The Mushroom King | Gather fifty-five mushrooms.
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| The Pinnacle | Reach the highest point in the highest tower.
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| The Scholar | Unlock forty-five footnotes.
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| Unbound | Escape from Tilo's cell.
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