Not too great
At first I kinda liked it since the overhead view, and the art style reminded me of Endless War, but I found some problems. In the Rocky Mountains, the game becomes extremely unresponsive, and the game slows down considerably. The weapons were off balance, for example double barreled rifles weren't very common in the 1820's maybe a double barreled shotgun, or a cap and ball rifle but not a double barreled rifle. And I know a colt pistol isn't going to do more damage than a shotgun and kill a bear in one shot, it would've fired faster but it wouldn't have done more damage. Keep editing and refining this game, and pretty soon you'll have a pretty kickass game on your hands. I'll give you a 7 out of 10 since you obviously tried pretty hard in a limited amount of time, and this wasn't a bunch of spam.