| Achievement | How to unlock
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|---|
| A Spoon Full of Sugar | Find the fifth signal.
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| Boomstick | Obtain the shotgun.
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| Closure | Finish the game on any difficulty.
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| Cooking on Gas | Obtain the flamethrower.
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| Guilty Conscience | Find the fourth signal.
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| High and Dry | Find the third signal.
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| Living With Ghosts | Find a record of events.
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| Logomaniac | Find all written documents.
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| Masochist | Finish the game on Punished difficulty.
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| Not for Grown-ups | Find the seventh signal.
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| Occupational Hazard | Find the second signal.
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| Quiver Down Your Spine | Craft the Bow and Arrow.
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| Resident Upheaval | Find the sixth signal.
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| Reunion | Obtain the Reunion ending.
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| Riven | Obtain the Riven ending.
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| State Regulations | Find the first signal.
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| This Station Is Non-Operational | Find the eighth signal.
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| Walkie-talkie | Find all lost signals.
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| Whatever it Takes | Finish the game on Intended difficulty.
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| Woof | Unknown.
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