My take on Watchmen after playing the demo is I think this could be a hit. I haven't seen Watchmen the movie, but from what I've heard, it didn't live up to expectations. I'm not sure what expectations have been placed on Watchmen the game, but I think Warner Bros. did a great job on almost everything. Now, I realize I haven't gotten the full experience because it was only the demo, but the only thing I think they should change is the difficulty of the enemies.
In my opinion, I could play this game almost with my eyes closed. The enemies don't hit hard or fast enough for you to have to worry about charging into a big gang of them and getting hurt. You can run into a group of them and kill them all no problem.