The demo is really fun....but it had one of those (imo) really annoying "you're in the back of an escaping vehicle, here's a mounted gun, shoot stuff as it chases you and don't let the vehicle get hurt either" segments. I get tired of those very quickly....maybe that one in the demo is the only one in the game.
Hitting stuff with the sledgehammer is awesome. It sends people flying and like, rips down walls with terrifyingly fun ease....
Loving the explosion and the badass walk-away. ^_^
I can understand why you wouldn't like that part, I was a little scared when I first heard about the 'on-rails' segment of the demo but it turned out to be my favorite part. The way the cars collide and fly up into the air when you hit them is so damn cool!
It was alright, certainly played through worse segments on-rails. (and the explosions and reactions are very impressive, agreed)
What I really hate is timed-button-pressing segments. Like, the worst thing a game could do. Force Unleashed had them and I was just like UGHHHHH I HATE THIS. I really can't stand tapping buttons to get a pre-made event to happen....it feels cheap.