Took me 20 minutes but i beat the demo on the hardest difficulty. All I can say is, I don't think i can wait 11 more days...
Its kind of interesting how they do life. You have ego, and more you get hit the lower your ego gets. I can't tell for sure, but it looked as though the more I killed the higher my Ego got. Devastator feels just like it did in D3d same with the shrink ray. Even though i only had it for a couple of seconds I loved using my chain-gun cannon
Spoiler Alert, click show to read: 

Took a few screen shots too. As in 18 of them. Here are my favorites.
First shot of the duke once you can control him


These guys come up with some great strategies.


Duke vision, cause night vision was so last week.


If this guy wanted to live he wouldn't be standing on the tracks.