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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20140810104957" timestamp="2014-08-10T10:49:57Z" ns="0" title="Usunięcie istniejącej postaci" />
        <page value="20140810105801" timestamp="2014-08-10T10:58:01Z" ns="0" title="Wybór duszka lub sceny" />
        <page value="20140810111127" timestamp="2014-08-10T11:11:27Z" ns="0" title="Dodanie nowej sceny" />
        <page value="20140810111624" timestamp="2014-08-10T11:16:24Z" ns="0" title="Obszar roboczy skryptów wybranego duszka lub sceny" />
        <page value="20140810111833" timestamp="2014-08-10T11:18:33Z" ns="0" title="Edycja tła" />
        <page value="20140810114157" timestamp="2014-08-10T11:41:57Z" ns="0" title="Kategorie klocków / bloczków" />
        <page value="20140810114346" timestamp="2014-08-10T11:43:46Z" ns="0" title="Przełączanie między skryptami, kostiumami a dźwiękami" />
        <page value="20140811142015" timestamp="2014-08-11T14:20:15Z" ns="0" title="Namaluj nowego duszka" />
        <page value="20140811142038" timestamp="2014-08-11T14:20:38Z" ns="0" title="Wgraj duszka" />
        <page value="20140811142246" timestamp="2014-08-11T14:22:46Z" ns="0" title="Nowy kostium duszka" />
      </results>
    </querypage>
  </query>
</api>