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One of the improvements Halo: Combat Evolved Anniversary will have is AI marine allies to aid lone players in Firefight. The news was announced during HaloFest before PAX and revolves around the horde-style gameplay mode first introduced in Halo ODST with allows gamers and their friends to play together to fight off swarms of enemies including Grunts, Brutes and Elites. With Halo: CE Anniversary, gamers who don't feel like playing with other people will have a fighting chance thanks to the addition of AI marines. These soldiers will have your back as you take on the enemy as featured in the Firefall map, Installation 04 within Halo Anniversary.
Halo: Combat Evolved Anniversary will be released on November 15, 2011 for the Xbox 360.









According to game blog 
