South Park Let's Go Tower Defense - 20 Across Challenge Level Insane Playthrough (Xbox 360)

Playing through challenge level '20 Across' on Insane difficulty scoring Platinum medal in the process. Beating this level unlocks Plasma Ball tower which may come in handy on challenge levels. I also made a video walkthrough for the entire campaign mode. You can check it out following the link:    • South Park Let's Go Tower Defense  -  Camp...