Feel like creating your own killbox? Then fire up the Map Editor, where you can do everything from plotting the type, number, and placement of each wave of enemies to sculpting the very terrain itself. We’re not going to delve into the map editor here, simply because it’s so robust it almost warrants a whole separate guide (especially the PC version). But it gives you all the tools you need to create top-notch level maps, so don’t be afraid to get in there and start playing around.