DooM - Lets Play - Entire First Chapter (HD)

Doom - when I first played it in 1993 at 8 years old it was the most incredible experience ever. It was a window to another world.
I have not played the game in many years, and still remember location of most of the secrets. This video is me playing through the entire first chapter (1/4 of the final game). No guides, no previous runs.. just fire it up and play.