Well I liked the video. Brutal Doom is probably my favorite game to watch and one of the best games period. There are all sorts of interesting subtleties that other games lack. I hope Mark makes his own game to make money off his programming talents.
I liked how the entire film was shot in POV. It really immersed the viewer in the story. But I did find one plot hole: I saw that the main character died at least once. How did he keep fighting? Was it someone else?