This game has serious problems, of which, the models are too low to even consider.
The text [...] the dialogues [...] The plot [...] The characters
Exactly. Also exactly what I said too.
This dev has none of the skills necessary to make a good game other than the ability to do renders (and even then, only static ones, no animations).
My constructive criticism is that he ought to start from that realization, and understand he still has an incredible amount to learn about writing, plots, character development, and gameplay, and see if he can hire out or team up to make renders for one of the many devs that are good at story and plot, but lack rendering. That way he has the opportunity to learn, both by watching and being a part of the process, and by asking questions, as he works with someone with the skills he absolutely needs to learn.
Basically, a working apprenticeship, instead of having to learn those things elsewhere, alone, unpaid and unproductive. That's because if he tries to keep churning out crap games before learning those important aspects, he'll completely tank his reputation and following before he gets to ever make something worthwhile.
Dev, look at the amount of criticism and remembrance of just one bad and abandoned game. Do you really want to times that by 10 or 20 and think anyone at all will give the benefit of the doubt for further games after that? Learn the craft.
Right now, you probably have a fair bit of the Dunning-Kruger effect. You don't know enough about writing, about characters, about plots, to even know what you are missing. I'm confident in saying this is probable because we all have areas of knowledge where the Dunning-Kruger effect applies as does every single human being who ever said "How hard can it be?" about something that looked easy, and wasn't.
There's a lot you need to learn. That's a good thing because if just anyone could create a successful game, literally anyone and everyone would, meaning there'd be more supply of games than demand for them. Difficult to learn and not something that is natural to the vast majority of people is why it has value, and why a great game can make decent money.
However, while many lack the skills to write a great story, to flesh out an engaging plot, to give life to interesting and believable characters, almost all of us are familiar enough with enjoying good stories, especially from books, movies and TV, that they can instantly tell if you are bad at it. Right now, you are very bad at it. You can fix that, but only by having the courage to admit you need to learn, and then committing to doing so.