If you stick with it, it's not a horrible show. It certainly has some ABC cheesiness, especially with some of the lines they spit out. Some of the plot points are weak, at best, as well. But after all that being said, its fairly watchable. They do a good enough job with the first season, as a whole, to feel complete, plus it gets bonus points for being in the Marvel universe and working with the movies.
If they could cut the season down to ~12 episodes it would be much higher on the 'must watch' scale but, as is, it sits at 'worth the watch if you like the Marvel universe movies'.