Played this all day, finished the story and a good chunk of the sidequests. The game is pretty fun, but the mission design is almost as repetitive as Destiny's. Nearly every mission has you either defend something or run out into the city and collect or kill X amount of whatever. It's like playing an MMO. But that doesn't bother me much because the traversal and combat are enjoyable. I even liked going after the collectibles because it's fun to simply navigate the city. It reminds me of Crackdown or Gravity Rush in that sense, although I'd say SO is better than either of them.
Hmm, what else. The graphics and art are awesome, the soundtrack is nice and it fits the game perfectly, but practically every song sounds exactly the same to me. I'm not a fan of the writing either; it's way too meta for my tastes with the constant pop culture references and 4th wall breaking. It never annoyed me or anything, though.
I'd buy this if were on sale for $30~ for black friday, but it doesn't look like there will be any good deals. I might just start up gamefly again to complete it.