So I just beat the game, pretty dope overall. It felt a bit short though... maybe it's because I had all weekend to play, so that's why, but otherwise, very well done game. Story is decent enough, with a few nice moments, but I enjoyed InFAMOUS' original two stories better. Though, the one side quest in this game is really interesting so far, so I'm curious about that - overall, I really enjoyed Del, Fetch and "Unknown" - that power is so... amazing, damn.
Anyway, gameplay is awesome, though the wall running could use a lot of work, since I found it annoying at parts, but it felt like they never wanted you to ever do that, so utilizing the vents and other jumping abilities you gain later on.
I hope there is some awesome story DLC for later on.