The tactical plan is to run one of the Gunhaulers with the secret compartment filled with a unit of Thunderers or Thundrik and his lads (if the latter, I'd have room for a navigator there as well given that there's a Skywarden in that unit). This second unit of Endrinriggers will go with that Gunhauler so that they can survive a bit longer.
Since I've never been able to play a game with this army due to the pandemic, I have no idea if this will work.
