9 out of 10
Better supporting cast, especially big improvements from Karen and Foggy, better action, and a faster paced story that doesn't slow down. Season 1 kind of fizzled out for me a little in the last 3 or 4 episodes, and it's finale was underwhelming, but not so this time. I loved the chemistry between all of the characters, the more violent tone while still having more of the comic book elements come into play. Daredevil is the Batman tv show I always wanted, that I didn't get with Gotham.
I'd say the main flaw of this season is that two of the big plot reveals were done a little too late, and weren't explained as well as I'd have liked them to, and that the Punisher and Elektra story arcs don't actually intersect very much like I expected. Other than that, this show is masterful.