It's mostly the same as DoP was except now the stories directory is in Loc/English.
Once you have multiple directories in the Loc directory, it will give you a choice of which language to use in the upper left corner of the main menu screen.
You should also be able to change the loc_language user var from the console when you are in the game. For example, typing
in the console and hitting enter would change the language to English.
Depths of Peril, Kivi's Underworld, Din's Curse, Drox Operative, Zombasite, Din's Legacy, & Drox Operative 2