Mindustry; mostly goofing around on first level, router spam, & 4 by 1 defense module schematic idea

I know there's a ton more to learn, and this isn't very efficient, but I think I have things working okayish for early enemies if they recur when revisiting this sector later on. Either way, with routers everywhere, it allows for easily plopping modular defense systems like the 4x1 idea I had.