Just ran into this today as well :I Kind of frusterating.
And Walkindead.7016 is correct in saying that risen will become stuck in the rubble if you don’t kill them before Tonn blows up the towers.
http://img189.imageshack.us/img189/6048/du93.jpg
And while I can attack him, his health remains unaffected.
Meanwhile, Tonn and the crew are chillin’ out by/‘in’ that tree just like in Tarmac.5143’s screenshot.
Ah well.
