I gotta give you some originality points because of the rails and terrain interactions, but I also got to agree at least a little with ayleczander on this one.
The design isn’t the best, too much randomness not enough decision making, and the adherence to theme is a little weak.
Also, this was probably just me, by rail shooter I thought you meant trains and I was like “Oh snap, flipping trains, I can get down with that” and then I found out it was like, guard rails, I got kinda sad, lol.