Lot of little things I enjoyed: western musical sting on exiting the start screen, swing beat in the intro cutscene, main menu shooting (and reloaded to try the bottle after seeing the comment about it), the kick animation, the prone animation when pressing down (I saw this is in Contra as well, haven't played it myself!) which I wonder if it could work as a dodge? Maybe that goes against established genre expectations, idk. Love slopes in side scroller levels, I feel like they get avoided in small indies due to the extra work. The barkeep whipping out the shotty caught me by surprise the first time. I think he could've been just a little harder, but better to err on the side of easy for a jam game IMO. While I feel the train is a perfect setting for scrolling parallax backgrounds, the visuals read very cleanly as-is and seem true to the early Game Boy.
Good stuff. Mobile plays pretty well, wish more games supported it.