The mission itself should be very easy as long as you focus the APCs, regardless if you know to stand in the doorway. I had zero problems with a Battlemaster, a Highlander, a Grasshopper and a Jenner. I even sent the Grasshopper and the Jenner to the optional objective straight away, so the two assaults did 90% of the work in the base. It was really no problem at all, I can't understand where these complaints are coming from. The secondary mission I did fail, however it was because my Jenner decided to miss three of it's four 85% shots. I guess it's sort of a bonus for bringing a light.
I had absolutely no problems with the APCs in this mission as well. I even sent in my (simulator only) B-team with bad skill selection in a Stalker, an Atlas, a Battlemaster and a Jenner. Both APCs easily survived at 80% armor.
I've encountered many harder situations in the campaign (Smitheon for example), but maybe I just got lucky?
You have to protect 2 APCs that are going for turret controls, but if you bought assaults, the APCs move way faster than you and rush straight into an enemy heavy lance who will focus one of them down in a single turn.
I had absolutely no problems with the APCs in this mission as well. I even sent in my (simulator only) B-team with bad skill selection in a Stalker, an Atlas, a Battlemaster and a Jenner. Both APCs easily survived at 80% armor.
I've encountered many harder situations in the campaign (Smitheon for example), but maybe I just got lucky?