Game looks cool so far. Keep it up.
Woohoo, Croatia! Hey, if they can film Game of thrones here, why not an adventure game setting.
And now for the rest of my post, this isn't any critique or anything, just a small comment:
One thing though: I really have nothing against the name, but in Croatia and in neighbouring countries, I really can't think of a name of a city that's actually called "X City", there are a few "Xcity", like "Novigrad" or "Biograd" (as you can see "grad" means city, so that can help you if you're looking on Google maps or something) or there's Beograd in Serbia. And even when "grad" is used, it's not actually translated when named, so maybe something like "Slavokgrad" would actually be used and appropriate.
Again, I'm just saying this for information purposes only, I really don't mind you calling it "Slavok city".
If you need some slang words or some specific custom or terminology or location info, feel free to PM me.