HO. LEE. SHIT.
That is one of the most awesome Doom-related things I've ever seen. I'm sure your computer hates you for putting it through that. It's probably got stretch-marks now
13 times?! Some people have all the luck, I've only ever experienced it twice.
Also, what version of Stronghold is that, with the green marble area at 1:44? That ain't in the original version!