To understand the significance of the "Users.xml" file, one must first understand the structure of the game itself. Shadow Fight 2 saves player progress locally on the device rather than exclusively on a cloud server. This data is stored in a standard format known as XML (Extensible Markup Language). The "Users.xml" file acts as the digital blueprint of the player's save state. It contains variables for everything: the player’s level, the amount of gold and ruby currency, the weapons unlocked, and the progress through the story acts.
/data/data/com.nekki.shadowfight2/shared_prefs/Users.xml