Version 1.3 release.

Updates CHANGELOG, version, docs.
diff --git a/docs/dyn/gamesManagement_v1management.achievements.html b/docs/dyn/gamesManagement_v1management.achievements.html
index 72bcb7b..c55ff1c 100644
--- a/docs/dyn/gamesManagement_v1management.achievements.html
+++ b/docs/dyn/gamesManagement_v1management.achievements.html
@@ -81,8 +81,14 @@
   <code><a href="#resetAll">resetAll()</a></code></p>
 <p class="firstline">Resets all achievements for the currently authenticated player for your application. This method is only accessible to whitelisted tester accounts for your application.</p>
 <p class="toc_element">
+  <code><a href="#resetAllForAllPlayers">resetAllForAllPlayers()</a></code></p>
+<p class="firstline">Resets all draft achievements for all players. This method is only available to user accounts for your developer console.</p>
+<p class="toc_element">
   <code><a href="#resetForAllPlayers">resetForAllPlayers(achievementId)</a></code></p>
-<p class="firstline">Resets the achievement with the given ID for the all players. This method is only available to user accounts for your developer console. Only draft achievements can be reset.</p>
+<p class="firstline">Resets the achievement with the given ID for all players. This method is only available to user accounts for your developer console. Only draft achievements can be reset.</p>
+<p class="toc_element">
+  <code><a href="#resetMultipleForAllPlayers">resetMultipleForAllPlayers(body)</a></code></p>
+<p class="firstline">Resets the achievement with the given IDs for all players. This method is only available to user accounts for your developer console. Only draft achievements may be reset.</p>
 <h3>Method Details</h3>
 <div class="method">
     <code class="details" id="reset">reset(achievementId)</code>
@@ -133,12 +139,38 @@
 </div>
 
 <div class="method">
+    <code class="details" id="resetAllForAllPlayers">resetAllForAllPlayers()</code>
+  <pre>Resets all draft achievements for all players. This method is only available to user accounts for your developer console.
+
+Args:
+</pre>
+</div>
+
+<div class="method">
     <code class="details" id="resetForAllPlayers">resetForAllPlayers(achievementId)</code>
-  <pre>Resets the achievement with the given ID for the all players. This method is only available to user accounts for your developer console. Only draft achievements can be reset.
+  <pre>Resets the achievement with the given ID for all players. This method is only available to user accounts for your developer console. Only draft achievements can be reset.
 
 Args:
   achievementId: string, The ID of the achievement used by this method. (required)
 </pre>
 </div>
 
+<div class="method">
+    <code class="details" id="resetMultipleForAllPlayers">resetMultipleForAllPlayers(body)</code>
+  <pre>Resets the achievement with the given IDs for all players. This method is only available to user accounts for your developer console. Only draft achievements may be reset.
+
+Args:
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # This is a JSON template for multiple achievements reset all request.
+    "achievement_ids": [ # The IDs of achievements to reset.
+      "A String",
+    ],
+    "kind": "gamesManagement#achievementResetMultipleForAllRequest", # Uniquely identifies the type of this resource. Value is always the fixed string gamesManagement#achievementResetMultipleForAllRequest.
+  }
+
+</pre>
+</div>
+
 </body></html>
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