A non-cheatish trick for running quickly through Castle Darkmoor is by employing Telekinesis scrolls. Then you can avoid the mass-combats entirely by using these on the cubes. Vilx may also have a suggestion for you...

I haven`t been able to play much during the weekend, so I`m still in Bootleg Bay in my kniggit solo, but I`ve now reached the mainland after taking care of the Minotaur King. I`m about to help the Fire Lord once I`ve emptied my inventory at the local stores, heh!