I've been richarding around with the editor on ZF, and I found the perfect weapon - the mossy castle wall block. Damn near unbreakable, but when you do break it three rocks fall out. Holding down x(destroy) while repeatedly pressing z(place) will keep on putting and breaking the brick, causing a shower of rocks. When I grew tired of that, I let the zombies into my castle, and then I kept throwing down barrels, exploding the lower half, until a wraith blew it up, collapsing the whole thing. Not a single entity survived except one greg.
