I really loved this game (aside from a bunch of unnecessary swearing...) - the gameplay is unique and refreshing and spending time trying to find new ways to traverse the City was quite enjoyable. I have oftentimes found myself returning to play it through again.
Those of us that have been fans of the game were really hoping for a multiplayer "tag" in the 2nd one, but it seems our hopes may be dashed.
If you haven't tried the game, it's well worth the $20 (make sure to purchase it on Steam so you don't have the yucky SecuROM DRM.)
Maybe if more purchases happen, they'll continue development on the sequel.
Here's to hopin'!