O'Farrill was only a few feet away when the gunman fired smoke filled canisters into the theatre.
"He pulled out a shotgun," O'Farrill said. "I could see it clear as day and the he just opened fire on the front row. I watched two shots. He shot once, and it just lit up the theatre and then he cocked and shot again."
With those first shots O'Farrill and his friend tried to get down and avoid the gunfire.
"He said 'Pierce, Pierce I'm shot man! I'm shot!' and I said me too. Just stay down and then he shot me a second time," O'Farrill said.
Wounded and unable to run O'Farrill lay motionless on the floor of the theatre as the gunfire continued.
"He was literally standing directly above me, and I could feel his boot right next to my head," O'Farrill said. "I just had my face down on the ground and just stayed as still as I possibly could, and I prayed and I prayed and he fired off a couple more rounds and he left."
O'Farrill was taken to University of Colorado Hospital where he underwent surgery for his wounds.
He says those physical wounds will heal, but the pain he feels for others may never heal.
"I just think of those poor people that weren't as lucky you know and their families," O'Farrill said.
(KUSA-TV © 2012 Multimedia Holdings Corporation)