I found a nice little cycle I do. Spawn in, check for VIP, if not, then go to the breach to see if there are any more. Continue to the rocket yard to check again, and then head through the crashed hive ship to kill the ogre in there. Keep going and you'll get dumped out at the grottos, which is linked to the forgotten shore. Check, then continue to skywatch through the lunar complex. From skywatch head to the mothyards, then go back to the Steppes if there was a VIP there initially, since patrol missions can change if complete one. Go back to orbit and repeat. Sorry if that was too complicated, you're basically taking a lap around the playable Earth.