There was a mode implemented where the spider / lower left monster was raised for bashing. After that you had to shoot some dwarf targets. There was another mode where every other drop target was raised and had to be knocked down. And a couple others that I don't recall. Didn't really notice the multiball rules too much either. Shooting various shots selects (sets of?) modes and then shooting the right ramp starts them. I think all the dynamic elements on the playfield in combination with the modes give it a lot more variety than there might seem to be at first glance.
I thought it shot well. It was set up a little slow but that's easy to change I'm sure.
It looks even better the WOZ, especially the LCD appearance and animations are much improved IMO.
I am really looking forward to it, hopefully someone in Austin puts one on location.