I’m on the last mission, which has been quite tricky so far due to buildings restricting visibility and so I can’t see far enough (or round corners) to spot enemy heavy artillery that keep wanting to blow my units up. And then I keep running into bombers and gunships with units that can’t attack them. And there are Super Units hiding everywhere.
But I’ve made it far enough across the map to see the enemy HQ. I’ve saved for now to do the final assault at another time.