The action was good. Main characters getting killed off suddenly, often without sense or foreshadowing, gave it a more realistic atmosphere.
The problems I had, we're all the anachronisms. The series was really loaded with anachronisms, and not just tiny oversights. I have to believe they were done on purpose, because of the number and scope of them, and I don't understand why.
It detracts from the movie, when the trail of thought is suddenly derailed by one.
They make multiple references to places that did not yet exist in the 1880's, and.some.of them were important to the storyline.
It's possible to think that a few might be simple errors, such as when a character boldly calls another character a "quiff" (which is a term that didn't exist until 30 to 50 years later, at the very earliest), or when they refer to a character's .38 pistol (which also didn't exist at the time), but when they reference a brand name of an American icon that wasn't invented until the mid 1920s, including its public marketing?
Burma Shave sign references?
And one character repeatedly orders bonded whiskey, when there was no such thing as bonded whiskey until the 1890s?
These were absolutely done on purpose.