We made a box to shoot out of with a hallway that funneled them infront of us. We used barbed wire on the walls to slow/hurt them and forged iron spikes to take a bunch out. You have to be more active in defenses now. Next horde night we're adding some blade traps (buying them from a trader) and adding them to the hallway or something.
Anythign with pillars will be a bit of a risk if the zombies clump next to it now. Zombies get dmg buffs the more zombies are near each other
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we used a 1 entrance type base and it worked well! we have to edit it some but they went around the outside and into the entrance we made