Cody Miller was an administrator at HighSpeedHalo.net, a site devoted to Halo speedruns. He held multiple records in Halo level completion times. In August 2005, Cody Miller completed Halo 2 in Campaign mode, with the difficulty set on Legendary with a time of 3 hours, 17 minutes and 50 seconds without one single game-death. This can be considered a considerable feat, especially to someone new to the Halo game series. Cody is the first Twin Galaxies verified champion to finish the game without losing a life. Twin Galaxies senior referee Robert T. Mruczek said, "There is a variety of ultra-cheesy tactics that Cody did not employ... it was a clean run and one that should be respected by his fellow gamers on the title."