Wasn't really impressed with the demo either. The game play view makes all the gbs look so small, that when the level gets crazy it's sometimes hard to tell where you are. Aiming isn't very precise, which I expected, but it's more of a hassle than it should be. I don't really like IDW's art style comics, and the lack of voices of any kind really take away a certain tone with the game. Also, the comic text is hard to read and you can't even zoom in to on it which makes the comic portion pointless to some unless you have a big HD TV to play it.
Even though it's just the demo, I'm gonna have to think a while before I actually buy the game.