Ben 10: Power Trip

This is unlocked during the quest Symbolic Sightings at the factory

This is apart of the main mission, so it's unmissable. You will unlock this achievement shortly after starting the main mission of Strudelbak. Arriving in the city you will talk to a reporter who will designate you to go investigate a factory, at the end of this factory is where you will actually get access to xlr8 to leave.