Nothing amazing but lot of fun...
The bad side is the fact that the map isn't very clear at the first sight. Sometimes you've got to make a great turn to reach a spot that's near but on the other side of a cliff and you won't find the way easily. You've got to play for a long time just to know the landscape. Thanks some side quests obligates you to run into the wilderness thus making you more familiar with it.
That said, it's a 8 score game worth playing for the history and the fast pacing action...