I feel like the missions are pretty good for the most part; I'm pretty far in but have yet to actually play more since a frustrating random encounter. I do find the unskippable skinning cutscenes and little too long animations for doing something a bit trying. Also, the bug where Arthur will stow all but his sidearms and main weapon after riding the horse for a few minutes. When you dismount, you've got to re-equip every time. This issue is fixed in multiplayer though, but sadly to this day unfixed in single-player. These are really my only gripes, as Rockstar did a good job of approximating the feel of the late 1800s in the USA.