If they’ve been dead for a while then the body is going to be quite decayed so that unfortunate person would end up dying again immediately.
Unless you’re suggesting this thing that came to life is no longer human. So in that case decayed body/flesh, missing organs/bodyparts, etc. no longer prevent it from “life”. But I’d argue that isn’t a human coming back to life, more like a corpse transforming into something else.
If they’ve been dead for a while then the body is going to be quite decayed so that unfortunate person would end up dying again immediately.
Unless you’re suggesting this thing that came to life is no longer human. So in that case decayed body/flesh, missing organs/bodyparts, etc. no longer prevent it from “life”. But I’d argue that isn’t a human coming back to life, more like a corpse transforming into something else.