No invincibility cheat exists for Battle Realms: Wolf Clan (2002, Liquid Entertainment). The game has no built-in cheat codes, and modern trainers are incompatible with the patched executable.
Use Cheat Engine to freeze your Rice / Water / Essence values (4-byte search) — effectively infinite resources. Risk: Crashes, desync in multiplayer, no achievement satisfaction.
Best Path: Play the Kenji campaign on Hard; it teaches optimal Wolf macro/micro. The game rewards skill, not god mode.