Alright, the Alpha02 closed playtest of the first chapter is finished. There were 8 playtesters, who gave me lots of improvement instructions and helped me to find bugs/flaws. So, a lot of playtesters enjoyed the mod and its gameplay, I am very glad about this.
Now I am going to polish the first chapter and then move on. I don't want to make the entire mod and then polish it, it's just not enjoyable for me. I am going to finish the first chapter and then forget about it until the release.