Question related to XCom 2 here:
The linked duplicate is about tactics in general for the whole of the final mission, and the answers there are very generic: use OP abilities, focus fire, etc. Answers like this apply universally. I'm looking specifically for ways to beat the very last encounter, which is a small part (although the most time-consuming) of the final mission. If you haven't played XCom 2, this encounter is an order of magnitude mode difficult than the rest of the game -- especially if you go in blind. Hence strategies and tactics specific to it should be of interest, over and above the generic stuff.