Me, Tuffy P and Emily Carr

...had to save the world from killer aliens from a bad planet. And to do it, Emily hatched a plan for me and Tuffy P to blow up an art museum that had been infiltrated by aliens. These aliens were really nasty and had taken over most of the major centres. However, we were part of an underground helping people escape to unoccupied areas and at the same time attacking alien positions. Through much of the dream, we were moving around through tunnels underneath office buildings after successfully blasting the art museum. That's all the detail I remember.