I was expecting the next ferry arrival after that to be the same amount of people as those who perished; in order to bolster our numbers, but it didn't seem to be. The more we lose the harder it becomes to make any of this sustainable.

[Not actual sustenance which will get easier with less people but the morale of the town, the desire to explore and most of all the ability to solve whatever puzzle it is that the Keeper has thrown at them.]