Pros:

Fantastic level design
Long enough
The Finale

Cons:

Lack of music
Not that fun after a while
At some times, a little confusing

Conclusion:

A good campaign, but to be honest, not that fun. Some moments where superb, however, and the ship level was really well-designed. The early levels where sometimes hard to navigate, but there are lots of directions to next safe house. Good campaign but i don't think I'll play it more than once.