java.lang.RuntimeException: Could not create new instance of class org.jboss.arquillian.test.impl.EventTestRunnerAdaptor

java.lang.RuntimeException: Could not create new instance of class org.jboss.arquillian.test.impl.EventTestRunnerAdaptor

You get this issue if you have profiles-elements in your POM-xml and no one if the profiles are activated.
You can either activate one of the Profile Id using command-line:
$  mvn clean install -Pjboss-managed

or use your favorite IDE to choose one of the profiles to run.