Brass Key

<infobox>

 <title source="name">
   <default>Brass Key</default>
 </title>
 <image source="image">
 	<default>No picture.png</default>
 </image>
 
   <label>Release</label>
   <format>{{#ifexpr: 2.52 < 1 
   |31 March 2026
   |31 March 2026
   }}</format>
 
 
   <label>Wintermute</label>
 
   
   <label>Renewable</label>
 
 <group>
   <header>Properties</header>
   
     <label>Item type</label>
     <format>Collectibles {{#if:  | 
[[{{{type2}}}]][[Category:{{{type2}}}]]| }}</format>
   
   
     <label>Equipable</label>
   
   
     <label>Stackable</label>
   
   
     <label>Examine</label>
   
 </group>
 <group>
 	<header>Values</header>
   
     <label>Calories</label>
     <format>{{{calories}}} kcal</format>
   
   
     <label>Hydration</label>
     <format>{{{hydration}}}%</format>
   
   
     <label>Vitamin C</label>
     <format>{{{vitaminc}}}</format>
   
   
     <label>Weight</label>
     <format>0.00 kg ({{#expr: 0.00*2.2 round 2}} lbs)</format>
   
   
     <label>Oil/Weight</label>
     <format>{{{oilPerKg}}}</format>
   
 </group>
 <group>
 	<header>Decay Rate</header>
   
     <label>Inside</label>
     <format>{{{decay-inside}}}% per day</format>
   
   
     <label>Outside</label>
     <format>{{{decay-outside}}}% per day</format>
   
 </group>  
 <group>
   <header>Actions</header>
   
     <label>Backpack</label>
   
   
     <label>Radial</label>
   
   
     <label>On ground</label>
   
 </group>
 <group collapse="closed">
   <header>Advanced data</header>
   
     <label>Item key</label>
   
 </group>

</infobox> Brass Key is a Collectibles found in Episode 5 of the Wintermute story. It is found inside Cooper's Blind during the main mission Perseverance, gifted to Astrid Greenwood by Cooper during their conversation and it is used to open the Medical Clinic in the town.

Despite Astrid promising to return the key to the bartender, she ultimately never does.

Update history

* {{#switch:update|update=UPDATE|hotfix=HOTFIX|hidden=HIDDEN}} 31 March 2026{{#if:The Long Dark/Changelog#2.52| (Update)|}}:

• • Added to game.

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