The video was alright in general even though you were having issues with the visuals. I would recommend editing the first 1 or 2 minutes of the video because you were having problems communicating with the audience with your long pauses; that gives a bad impression that the whole walkthrough is going to be like that which it isn't. Actually, the only real issue I had with your game was your FOV setup. I was getting dizzy by the console-like narrowness of the FOV. I think a 80-90 FOV would look much better.
Btw, I didn't realized that the monkey was shot during the first cutscene. That was sad and funny. ^^