As you might have noticed, developer commentary in the game is not translated to any language.
To address this issue at least somehow, I decided to make a machine translation.
The translation is made with DeepL service.

1) Download the mod: click here[drive.google.com].
2) Unpack the archive into the game folder.
3) Start the game, select text language in settings (if not already), play.

Generally, quality is not bad for a machine translation, for most of the languages.
However, it might be worse for hieroglyphic languages - Japanese, Korean, and both Chinese. One reason for that is that machine translations for these languages aren't good in the first place due to heavy reliance on context, but another reason is that I had to translate them with only one line at a time, meaning that DeepL never had full context of a subtitle, making it even worse.

To delve deeper into technical details, for other languages I just fed the entire translation file minus string IDs, and then linked string IDs back after getting the result. But to do this, lines count in output file must be exactly equal to lines count in input file, and that wasn't the case for hieroglyphic languages - for some reason DeepL would eat up a line or two every now and then (e.g. contracting "and" word into previous subtitle), so I ran a script to translate them line-by-line instead.