I think this game is under rated because when was the last time you played a western with the depth this game has and with all the history,movies,and books im sure this game will have a high replay value.
I copied this from an article.
Whiskey bottles can be consumed to replenish health as damage is taken. Some other enemies we saw attack were riding stagecoaches themselves and we could blow them up by shooting at them or by blasting an explosive barrel should they be near one. When the stage was completed a screen came up indicating a +25 health bonus and that more missions had been unlocked.
Though this stage was very linear, you'll actually be able to do a good deal of roaming around the game world where you can pan for gold, gamble, hunt, complete wanted poster missions, or herd animals. The graphics in the game weren't the most impressive we'd seen, but at some points the draw distance extended very far and the framerate did not falter.