I just watched all 13 episodes, and oh boy, I find this whole series amazing. You had the start of what happens with Frank Castle back in Mavels Daredevil, where it would tell you why he was doing what he was doing, and it seems to me this guy just won't die after all of the shit he's put up with.
During this series there's a lot of amazing parts, and some I just hoped it was different in some parts but overall, I'd rate this a solid 10/10.
Rotten Tomatoes had rated this a percentage of 61%, although I do think it should be much higher, around the 90% mark considering 94% of the audience (User Ratings: 2,069) had rated it good.
https://www.rottentomatoes.com/tv/marve ... isher/s01/