There will be more choices during missions

In the demo Ubisoft is showing this weekend, the screen freezes to show that Connor can proceed across the battlefield one of two ways: the action path or the stealth path. In the actual game, it'll be obvious which choice is which, since one leads straight toward the enemies while the other heads off into a copse of trees.

With multiple paths to take through each mission, any play style might be accomodated for.