Crackdown 3: Wrecking Zone

This is easy. Just take an Anihilator and spam it at any large buildings you see. It took me about 5 minutes and popped mid match.

I use the Osiris personally as it seems to have the biggest bang, but you can use any of the rocket launchers for this. At the beginning of the match, just target the closest building and start blowing up all of the walls and floors. I started from the bottom and worked my way up. Just ensure the support beams on the corners have nothing attached to them before moving up. My achievement popped as the indestructible beams that held up the entire building began to collapse, indicating the build had taken enough damage to destroy itself.