A fan-made mod called Tenchu Z: Shinobi Edition (available via RGHTool) rebalances the entire game:

Tenchu Z is the final mainline entry in the classic stealth series. Unlike its predecessors, it focuses heavily on mission-based structure and character customization. For Jtag/RGH users, this game is a prime candidate for modification due to its robust mission editor, character customization, and the ability to bypass the now-defunct Xbox Live servers for system link play.

Tenchu Z on RGH/JTAG is a preservation success story. It turns a flawed but enjoyable stealth-action game into a fully accessible, modifiable, and co-op-ready experience. For fans of Tenchu , Sekiro , or Ghost of Tsushima , this is the definitive way to experience a forgotten Xbox 360 exclusive.