Played a little bit of it. It made my rig (2Mhz dual, 4g ram, 9800gtx) whimper and increase the virtual memory size.
I only made it to getting the blue key card.
The wall aligned sprites are all messed up.
First I though the game froze or caught a serious lag because Duke stopped looking around. Then I realized I could still move forward and backward. The game was not recognizing my mouse. I'd have to reach over and hit the panning keys on the keyboard to get the game to "re-connect" to my mouse. It'd work for a while then stop working again. That got old after a bit (especially during fire fights) so I quit.
Other than the messed up sprites, the map looked great.
btw, that's some serious muzzle flash from the mp5