What, after taking 5 days to read a response, you expect a fast answer?
I have no idea, honestly.
Without asking Styg, which is obviously an option, I'd venture it's a vertical slice, but it doesn't reach to the end.
In Devlog 15, he says he added quests which allow the player to learn more, but leave things to be answered later, which allows for the suspicion that there is a "later".
I think based on leveling it might be around two thirds the content of half the game? Don't quote me on that.