Since this mod only changes the index.html file of the original game files, it is fully compatible with the English fix mod here: https://www.moddb.com/mods/fear-hunger-now-in-english
Viewing post in Fear And Hunger Mod Loader comments
Take that with a grain of salt, this is a mod loader not a mod. The mod loader dynamically edits other files to attempt to ensure compatability with all mods, but sometimes there is a conflict between mods editing the same files, in which case the loader attempts to resolve the issue. But yup, for the most part it should work with all plugin based mods and most overhaul mods such as the one above.