This achievement will require about 170 waves of drones
The easiest way to do this is to be in creative and add a safe-zone around your beacon. (this needs to be powered by a large reactor and safe zone chips). From there set up the safe- zone to allow bullets but no damage. The safe-zone should whitelist you and your grids and forcibly eject all enemy drones. Due to this setup your defences may shoot the drones whilst not needing to be repaired. You can AFK the game whilst it shoots the drones down for you. (it's advised to make your defences stations so the recoil from the drones on your turrets don't knock them off/out)
If you don't want to do it semi-legitimately you can do the following:
You load the following scenario via workshop.
https://spaceengineers.mod.io/never-surrender-n1From there you wait a few minutes (be warned there's no hud and it's slightly glitched). if it doesn't work straight away you can try exit and saving and re-trying [Space Engineers currently being tad unstable on OG Xbox One]