You seem to have removed mouse control all together, the mouse cant be used, you can see the cursor move aroudn on screen, but you cant interact with anything, or in the menus

That bug was patched in 5 minutes after launch. You must have been one of the very first to play the game.

That style of combat isn't the kind of thing a mouse really makes a difference for anyway. As long as I can still switch targets with the middle mouse button, it'll be fine.

Is there going to be a demo?