Once she had enough she opened a blueprint in front of her face and began materializing structures in mid-air. Walls, floors, doors and windows appear. First we see ramshackle fortifications that monsters tear through readily. Then we're shown more sturdy and complicated structures; stairs, half-length parts, arches, etc.. The creatures knock that down as well. Finally she goes into the city, harvests some stone from the side of a building, and creates a massive fortress of stone, towering into the sky.
Want. Sounds like a mix of crafting weapons from Dead Island making bases from Minecraft and killing in TF2 style.