that's great to here but as someone who has never played this game before and has been waiting a little while, it sounds like i still have a ways to go before it is ready to be enjoyed from beginning to end.
A mod from the Discord Server predicted that the remaining 3 chapters should be finished before the end of next year but the problem is what comes next, the dev have another project on hold (called Eld) that he worked on before to get familiarized to the Unity Engine and he may decide to go back to it before remaking the remain chapters.
So yeah, it can take a while but if you are really interested you should give the Flash chapters a try, they are very experimental and because of that you will see many differences between them with new mechanics being introduced/replaced but some of the core elements like the Art and History remain at a high quality from the beginning to the end, the challenge tho will increase exponentially so testing this versions is a good way to know if you may like the new version or not (even if said version will suffer some changes that can lead to a very different experience).
Personally I had fun following the game and seeing it evolution with each new chapter, other people are not so happy with the constant introduction of changes and new elements so if that's you case you should wait.