I also want to start with Hungarian localization and already checked a bit.
There is a folder named 'Localization' in the game folder, now there is only English. There is a file which contains all the texts I suppose, but it's not very good readable by default.
There must be a tool which can get out the texts in better format and after translation put it back, but I didn't checked yet, I want to wait till the full release is out.


We are proud to report that we finished our DOS2 localization project (Hungarian). :'-)
https://warg8.jimdofree.com/