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>
    <alltransclusions gatcontinue="Backtotop|5921" />
  </query-continue>
  <query>
    <pages>
      <page pageid="5788" ns="0" title="Chaos Breaker (Dark Awake)" />
      <page pageid="5845" ns="0" title="Chaos Breaker/Ramda" />
      <page pageid="5846" ns="0" title="Chaos Breaker/Hellfire Sword" />
      <page pageid="5847" ns="0" title="Chaos Breaker/Earth Hammer" />
      <page pageid="5855" ns="0" title="Chaos Breaker/Nightmare Blade" />
      <page pageid="5916" ns="0" title="Chaos Breaker/Sandra" />
      <page pageid="5917" ns="0" title="Chaos Breaker/Curse Head" />
      <page pageid="5918" ns="0" title="Chaos Breaker/Elion" />
      <page pageid="5919" ns="0" title="Chaos Breaker / Fina" />
      <page pageid="5920" ns="0" title="Chaos Breaker/Evetta" />
    </pages>
  </query>
</api>