I also use the killbox method but what I'll usually do is bore into the side of a mountain so that it forces everyone into it if they want to reach me. Single file line into a bunch of large turret fire. I'll make sure that I have everything I need inside too, such as biofuel powering hydroponic gardens to make more biofuel from.
I've found only 2 issues with this...
1. You still have to take out sieges with your soldiers.
2. Sometimes they still try to mine their way in if you're not in deep enough.
I've found only 2 issues with this...
1. You still have to take out sieges with your soldiers.
2. Sometimes they still try to mine their way in if you're not in deep enough.