This one has been an absolute smack in the face compared to others. Even 12, which I failed a few times, I succeeded once I noticed the expanding traktor beam wreckage circle and had enough forces left to survive the stand and defend.
But holy crap. You just do not have enough requisition generation to keep up with the wave after wave of crap that comes at you. One question, and maybe this is where I'm missing something....is the strength and number of waves based on how many generators you have repaired? Or is it a function of time, and you need to get those up as quick as possible?