Finally picked this up earlier this week. So far I've gotten through the third district on my first (good) play through.
I really liked the intro and the initial weather in Seattle, but so far it just seems like there's something missing. Part of it is that the traversal is more awkward than in the other Infamous games so far, but part of it is that this is the third game in the series and the district-by-district cleanups and blast shard hunting is getting a bit old.
I like Delsin the character quite a bit, but when the game isn't doing dramatic scenes with him, he feels as generic as any other character. I think it helped Cole having Zeke as the NPC foil, and the mystery about the mythology helped too.
Right now, I feel like I'd rather be back in the woods of the opening scenes, trying to protect Betty, rather than struggling to get around the city.
The graphics are fantastic, of course, but they feel like they fade into the background while I'm playing, rather than creating an interesting world to explore. So far, the space needle has been the only really interesting structure to climb on.