
Took 3 tries, cost 10 million in repairs afterwards...
I burned through 7 tons of ammo before using the first repair bay, tried to tank most of the damage so my guys didn't die. I'd frequently just send my whole team to a corner to hide while I took down the easier waves and only bring them up when the waves got close. Still lost an arm just before the last wave hit and repair bays don't re-attach arms.
That last wave was crazy, turns out repair bays are bullet proof. Good thing. I basically had to hide in it and take out the last wave (mostly) by myself as they came into view.
LBX-10 Solid is an awesome weapon system, especially 4 of them.

BTW there is a Cataphract that can mount 3 LBX-10S with 4 tons of ammo and just enough armor. 4 tons is enough for most missions if you conserve ammo and take good shots.