simple solution

Because he showed his face so often and was totally not armed with a rifle?

"I drank to drown my pain, but the damned pain learned how to swim."

And in case of his demise he may have had that house bombed and with just one button as he's dying that he could push and blow the house with everyone in it up. I'm sure he thought of everything. I thought why don't they just play dead but I'm sure as each person died he made sure they were dead. He took a long time planning this and I'm sure thought of everything possible like when they took the car he had that whole place booby trapped..