Hello, while I am not with the development team I can say that the game is currently still being made and updated. If you want to keep up to date with the development check them out on Patreon!
And did I completed the game progress, or I have missed some quests? I know that I didnt made all the choices (good guy, mostly) but how can I know, if I completed everything?
the first option obvious, because gou can choose different paths with different characters, its uor choice, but the Chapter Select idea is actually good, I didnt think about it, thank you very much.