It is a good practice to specify the variables that you will modify as a designer to modify the properties of different game elements.
Let's say you have several weapons in the game that you need to balance. Hardcodowanie everything is a bad idea. When designing weapon mechanics, try to determine the parameters you want to change. Let it be the rate of fire, accuracy, recoil, etc… Let the code refer to a text file, XMLA, tables that will make you easy to edit.
Likewise, the case is with language locations. Do not put the game in Kosie, only references to location files, so that you can easily create additional versions of the game. You only have to remember this by planning the UI, as you may find that what in one language takes 10 characters in another can occupy 30.