Doomed Hometown: The film opens with the lead finding his mining camp depopulated.
Eloquent In My Native Tongue: A horse trader who barely speaks english is nonetheless capable of reading and writing (no small feat) and seems to run a successful business. He walks away from the confused Gillet mumbling in some language or another.
Viewers Are Morons: Surprisingly averted on the advice of Roger Corman. The original script gave had several long scenes that made the backstory explicit, but they were clearly dragging the story. Corman convinced the director that people could follow the story as long as the relevant information (that Willet has a brother) is repeated three times early in the movie.