> Will it have the same gameplay as netHack? Can I hack my way from the save files?
Nope. The game will allow you to load other savegames files, allowing you to go back if you get in trouble. The purpose is not to make it difficult to finish the game. The game never ends. However, all data in the database and save game files is encrypted. It won't be easy to edit the files.
> hope your strings are in resource files... for easy translation
Unfortunately no. I thought briefly about it. But decided to make my life easier on that matter. The game is all in English. To be able to translate it, one has to edit the source files and the data file.