PCs may deploy anywhere within the walls. Enemies enter from the edges of the map. The PCs must defend the south central building.  Walls that are still standing are size 2 hard cover. Rubble is difficult terrain and size 1 hard cover.

I made the mistake of allowing the PCs free time to set up mines and turrets, and didn't give the NPCs the same free time to set up their buffs before the fight started. The PCs also got some lucky crits to immediately take out the Priest, and the first structure damage broke the Demolisher's warhammer. So this was a pretty trivial fight for them. If I were to redo this map, I'd make the central entrance larger and have all of the enemies pour through the one entrance together. I'd also move the objective building to the center of the map - the Demolisher's 2 move speed makes it not at all a threat with this much area to cover.
