I looked deeper in the downloads.jboss.org/portletbridge/episode6.zip project and I discovered that the archetype isn't a complete HelloWorld project.

You need to edit the file porlet.xml to make a HelloWorld:

<?xml version="1.0" encoding="UTF-8"?><portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"

version="2.0">

  <portlet>

    <portlet-name>episode6PortletA</portlet-name>

    <portlet-class>

      javax.portlet.faces.GenericFacesPortlet

    </portlet-class>

    <init-param>

      <name>javax.portlet.faces.defaultViewId.view</name>

      <value>/home.xhtml</value>

    </init-param>

    <init-param>

      <name>javax.portlet.faces.preserveActionParams</name>

      <value>true</value>

    </init-param>

    <expiration-cache>-0</expiration-cache>

    <portlet-info>

       <title>episode6A</title>

    </portlet-info>

    <supports>

      <mime-type>text/html</mime-type>

      <portlet-mode>VIEW</portlet-mode>

    </supports>

  </portlet>

</portlet-app>