You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allredirects garcontinue="Diadem_Cluster|7028" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1075" ns="0" title="Cambrius Skirmish 1410390576" />
      <page pageid="1076" ns="0" title="Cambrius Skirmish 1413663053" />
      <page pageid="1077" ns="0" title="Cambrius Skirmish 1413816967" />
      <page pageid="1078" ns="0" title="Cambrius Skirmish 1413817147" />
      <page pageid="2396" ns="0" title="Battle Report Title" />
      <page pageid="2397" ns="0" title="Battle Report Title~1439280828" />
      <page pageid="3349" ns="0" title="Baylonian Insurrection~Act Two" />
      <page pageid="6323" ns="0" title="Skirmish~1518098282" />
      <page pageid="6419" ns="0" title="Battle for Kenuc--Denial at Kenuc Beta" />
      <page pageid="7158" ns="0" title="D43 - Tard" />
    </pages>
  </query>
</api>