I like where this game is going, the concept is pretty neat for a western themed roguelike and the gameplay works fine. Obviously there's quite a bit missing in terms of features like an actual story, lose/win conditions (as someone else commented), but I can imagine those will be added in due time.
The only suggestion I would make for future development is to add some polish on the feedback for killing an enemy. Currently when an enemy dies it plays the same looping animation and then dissolves (which is a cool effect by the way), but for me anyways the effect felt like it was a little too delayed so I couldn't tell right away if the enemy was killed. My suggestion would to make it so when an enemy is killed, they switch to a frame of them being obviously hit or killed and then dissolve. Just my two cents.
Overall though I liked it, a good template for future development.