I have found a setup which allows you to kill the north west camp protecting the middle WT (C5 in Lulu's guide). All gens must have at least 1 point in first aid and MG must have 3 points in garrison annex. General placement is up to you so you don't end up fouling any blocks for the WT.
Nus 1xb
MMA 1xb
MMA 1xb
MMA 1xb
MMA 1xb
MG 1r 284c
Thanks to first aid we get all 5 of the xb's back and the final MG hit is a no loss attack.