Hmmm... since it is a NetFlix series, should it be called "series 2" instead of "season 2"? We're not going to get the third season until 2018. But I guess the US sensibilities apply, so "season 2" it is.
Anyways. This season started a bit unevenly, there was a bunch of "what the hell is really going on here" with things, and when things got amped up you realized that they already were amped up -- that transition, as well as the part-A to part-B transition, was more than a bit rough. The end was a bit weird too -- "We live to serve you, Black Sky!" "Well, I fight against you!" "Well we fight you then!" -- and I'm like, what? That was a very confusing five minutes. Then the pseudo-happy-season-endings with a hint of a cliffhanger tacked on the end of that.
The whole dragging-Murdock-through-the-dark was simultaneously too much and not enough, if you know what I mean. And I didn't really think Frank Castle's journey was worth the trip, in the end.
Overall, season one benefited from nobody really knowing what Daredevil was all about. Origin stories are useful for a reason, that being that the arc of discovery provides a real framework for the A-story. Absent that, you have to have a good A-story to carry the series, and I think that this season tried to have two of those and it didn't really work.