Campaign

Campaign Mode is the single player gaming aspect of Halo: Combat Evolved, Halo 2, Halo 3, where the player takes control of a single character at a time through the canonical storyline of the Halo trilogy.

It can be played on four difficulty levels, listed in order from most difficult to the easiest: Legendary, Heroic, Normal, and Easy. In addition, Halo: CE and Halo 2 have a co-op campaign option permitting two players to play through campaign either in split-screen or via system link between 2 Xbox's. For Halo 3 the number of players permitted has changed to allow up to 4 players and the use of Xbox Live.

Halo: Combat Evolved Campaign Levels

 * 1) Pillar of Autumn tutorial
 * 2) Halo
 * 3) Truth and Reconciliation
 * 4) The Silent Cartographer
 * 5) Assault on the Control Room
 * 6) 343 Guilty Spark
 * 7) The Library
 * 8) Two Betrayals
 * 9) Keyes
 * 10) The Maw

Halo 2 Campaign Levels

 * 1) The Heretic (Cutscene Only) (Non-playable)
 * 2) The Armory (Tutorial}
 * 3) Cairo Station
 * 4) Outskirts
 * 5) Metropolis
 * 6) The Arbiter
 * 7) The Oracle
 * 8) Delta Halo
 * 9) Regret
 * 10) Sacred Icon
 * 11) Quarantine Zone
 * 12) Gravemind
 * 13) Uprising
 * 14) High Charity
 * 15) The Great Journey

Halo 3 Campaign Levels

 * See the main article: Halo 3 Campaign


 * 1) Arrival (Cutscene Only) (Non-playable) |Turtorial (Only in easy and normal)
 * 2) Sierra 117
 * 3) Crow's Nest
 * 4) Tsavo Highway
 * 5) The Storm
 * 6) Floodgate
 * 7)  The Ark
 * 8) The Covenant
 * 9) Cortana
 * 10) Halo

Trivia

 * All of the games end with Master Chief in space. In Halo: Combat Evolved, he is in a Longsword. In Halo 2, he is in the Forerunner Dreadnought. In Halo 3, Master Chief is in (half of) a UNSC Frigate, Forward Unto Dawn, which is drifting in an unknown part of space.
 * Halo: Combat Evolved starts with Master Chief leaving a cryo pod and Halo 3 ends with him entering one.
 * At the end of each game, after the credits, there is a bonus cutscene that shows a mysterious planet as the Chief's ship floats by. There is a theory that this planet will play an important role in a sequel, if any, to Halo 3.
 * In every game the Master Chief falls unconscious. In Halo: Combat Evolved he is unconscious after the escape pod crashes at the beginning of the level Halo. In Halo 2, he is knocked out when the Pelican crashes. In Halo 3, he is unconscious at the beginning of Sierra 117 after landing on the ground after leaving the Forerunner Dreadnought.