This one is pretty painful. Found it on Amazon Prime under the title "
American Cowboys vs Aliens".
The cinematography is bad.
The sound quality is bad.
The pacing is bad.
The script is a disorderly mess.
Acting, directing, editing... all pretty bad.
The costuming is bad (especially the Predator-look-alike alien).
This looks like it was made by some film students on a budget that would do well to buy a used car. Someone apparently had some nice 19th century props around the house, though.
Overall, not much value other than as an example in how to do things wrong. It's not brain-shatteringly bad, just painfully disappointing.