My son got this game for his birthday and loves it. I was listening to him play it, and I think it could be made accessible for blind players with only a few adjustments. Probably one of the easiest things, that would help right away, is add an option to send everything that gets printed to the screen to the clipboard. Both Windows, with an NVDA addon, and Linux, with one of my projects, can read text sent to the clipboard automatically.
The more involved route would be to add text to speech into the game, for that, sapi5 could be used for Windows and speech-dispatcher could be used for Linux. There are probably a few other minor things that could be done, but being able to know which option is selected and hear what you are supposed to do would go a long way toward making this playable for blind gamers.
It would be really cool to be able to play this with him. If you are interested in adding accessibility, I would be more than happy to test and provide feedback.