Pros:

+Clever map design.

Cons:

-First map way too long.
-Second map poorly designed.

Conclusion:

Specifications on the cons: the first map was way too long, that speaks for itself. My friend and I who both played it could not outlast the first chapter three times over due to lack of sufficient health supplies for such a lengthy chapter. The second map is where my friend and I gave up because we were all standing in the water when the draw doors were opened and electrocuted the water... Incapacitating ALL OF US with NO WARNING. Otherwise the map designs were all very nice and if the gameplay was tweaked this campaign would be much better.