Thank you for making me curious about the realization I wasn’t aware of a “silver bullet” for Wendigos. Silver comes up, but it seems fire is a more commonly accepted weakness - whether simply chucking a molotov or tricking it into eating salt, which apparently causes it to hack up its still beating heart, which must then be burned (feels overkill but better safe than sorry)
Oh, or just feeding it and treating it like a person, since its origins are a myth warning against cannibalism. Bear tallow is a supposed inoculation, which makes sense given eating animal fat would provide quick nutrition.
It’s the rotting flesh that’s the problem! The slug just goes straight through with minimal resistance whatsoever. Last time it went through and ended up shattering one of my garden gnomes, and the damn beast just stood up on its hind legs and walked away unscathed… it was one of my good garden gnomes too…