Thanks, glad you like the game & the design! I'm not sure where the Polish team got their map from, and I don't have any plans to include it in the English version. You can ask them if they'll translate it back into English.
The design is all custom, including the weathering and the icons (which I drew myself). You're welcome to use any of it for your own handouts – email me at david (at) davidbrunellbrutman.com and I'll send you the original working files. (Note these are Adobe Illustrator documents and you'll need some Adobe fonts.)