Grammar check.

 

It should be a comma rather than a semicolon. 

.

We can use a semicolon to join to otherwise complete sentences. So

 

"The setting makes you more likely to anticipate the ending, as this is in a small rural village and anything can happen; although it doesn’t completely reveal the ending and still preserves the surprise."

 

is completely grammatically equivalent to:

 

"The setting makes you more likely to anticipate the ending, as this is in a small rural village and anything can happen. Although it doesn’t completely reveal the ending and still preserves the surprise."

 

Let's look at it the second way for now and convert it back later.

 

Now another problem is more apparent. "Although" is a subordinating conjunction. Saying "Although it doesn't completely reveal the ending and still preserves the surprise." is like saying "After he went home." In both cases, the reader is left hanging, waiting for the rest of the sentence. "After he went home" -- then what happened?

 

Here's a short but helpful post about it:

https://www.kaplaninternational.com/blog/however-vs-although-quick-english

 

So instead of using "Although", let's use "However,":

 

"The setting makes you more likely to anticipate the ending, as this is in a small rural village and anything can happen. However, it doesn’t completely reveal the ending and still preserves the surprise."

 

Now we can change it back to the semicolon form. (And you definitely need a semicolon there because you can separate it into two sentences at that point.) Again, the following is grammatically equivalent to the previous:

 

"The setting makes you more likely to anticipate the ending, as this is in a small rural village and anything can happen; however, it doesn’t completely reveal the ending and still preserves the surprise."

 

Here's another thing you can read about using "however" in a sentence:

https://web.sonoma.edu/users/f/farahman/subpages/utilities/however.pdf