Arthur knew that the condition to go to the next main settlement was to reach the level 10, but there were some additional things that were needed.
First of all, the players didn't even know that there was a town near the village. They wouldn't be told that there was something like this even if they hit level 10. Only when they were informed by certain NPCs would they realize that they could actually get to the next settlement.
And even then they had no idea that they could actually obtain a class after that. All this was the knowledge that was only obtained after one reached the first town.
The towns were made in such a way that most of them were located near the newbie villages. Of course, even if they were 'near' the villages they were still a few hours away. In order to reach the town, one needed to be strong enough and also have permission from the village chief.
