This mod is notoriously difficult. A single bullet can kill your player character. Armor is non-existent. You must use skirmish lines and cover. For veterans tired of medieval melee, this is the ultimate Mount and Blade with Fire and Sword mod for firearm purists.
"Von Teuffel's Last Key has been added to your inventory." mount and blade with fire and sword mod
Then someone else added a full Crimean Khanate overhaul. Then a Swedish diplomat questline. Then a total conversion that removed the original Fire and Sword campaign entirely and set the whole thing in a fictional steampunk seventeenth century. This mod is notoriously difficult