I can get them to move to a brick, play the attack animation for x seconds, then mmake it explode.
Not enough. ZAPT doesn't like those types of events.
Maybe strategic zombie spawn placement could do it, or I could quasi-zombie some bots just for the explosion purpose.
What's going to happen is a bot survivor is going to shoot zombies on top of this big oil container but the guy'll fall in and the zombies will attack the container, resulting in its explosion as the guy inside panics and fires a shot or some other made up circumstance.