I went through the initial mission, liked it fine - then the credits roll. after that you can select side missions. the first couple were ok, but the same map. 3 additional sides later on the same map (base) was enough; I give up. And what the heck is up with credits rolling after each. Thank goodness this was a rental.
And if any of this games programmers read this... most stealth based missions happen at night! what is up with all the daylight?