>>543706435
ZA does work with Hordes, just does get quite performance heavy if you let the waves build up. No clue how it'll be underground. Be sure to reduce or turn off it's sound alerts, they're extremely annoying
>Does create by any chance allow you to make defense turrets?
Big Cannons and Radars, let you make turrets that automatically target but they'll take up quite a bit of space, at least compared to single block stuff like security craft, so I don't know how good they'll be underground. picrel is the smallest setup possible and that's without shafts, gearboxes etc. you can hang turrets upside down Fallout style so there's that at least.
iirc Immersive Engineering has a turret that takes up like two blocks