I would LOVE to beta this for you! I'm a game creator / writer myself and think I understand the fundamentals well enough to be useful. I can provide in-depth feedback, ranging from evaluation and suggestions for overall story, writing, gameplay, and can of course also do smaller, discrete tasks such as bug testing, help with sentence structure and grammar, depending on what you're looking for.
I'm completely in love with Good Omens right now and this game has been the most exciting thing I've found in the fandom. I adore it - the art, the writing, the easter eggs, the characterization, everything. Do let me know if you've still got a spot open.