Series creator Tomonobu Itagaki stated that he spent most of his time during development just working on the game, and spent very little time sleeping (about 10 minutes a day).
This is actually the first retail game on the Xbox 360 to have "Zero Point" achievements, or achievements that do not add to your gamer score. This allowed it to be featured in the 2012 edition of the "Guinness World Records: Gamer's Edition."
Team Ninja wanted to include Master Chief in the game as a guest fighter. However, Bungie told them it was impossible for him to be in the game due to storyline restrictions but they were still interested in the idea of putting a non-cannon character from the Halo universe in the game. The end result was the character Nicole-458. In keeping with the idea of English being the language of the United Nations Space Command, Nicole is also the only character in the game that speaks English.