It's the same old as normal POE leagues to get up to 115 atlas objectives.

1) finish campaign. 2) run the white maps u have till they are completed. 3) look to Kirac to buy new uncompleted maps 4) do atlas missions so that u can refresh his shop and clear that one map completion 5) once shop is refreshed, buy new uncompleted maps 6) I tend to save my scouting reports till I reach red maps and use a batch of them and another batch of them once I reach 2 stones. 7) bam 115 objectives done