Before you finish the fight with Master Chief in Halo 4, return to the very first fight--the fight you thought was finished in 2001-- and finish it all over again.
During Microsoft's E3 Press Conference, the minds behind 343 Industries announced Halo: Combat Evolved Anniversary, an updated and enhanced remake of the original Halo: Combat Evolved. Commemorating ten years of Spartans, Team Slayer, Needlers, plasma grenades, Warthogs, and teabags, Halo Anniversary will feature an enhanced retelling of the original Halo campaign with HD graphics.
In addition to the campaign, Halo Anniversary will feature seven updated versions of the original game's multiplayer maps, which means that you'll finally be able to play the REAL Blood Gulch in an online Halo match (you know, instead of all those fake Blood Gulch maps.)
Halo: Combat Evolved Anniversary will be released for the 360 on Novermber 15.