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. In Halo: Combat Evolved and Halo 3 the player plays as John-117 or Master Chief, in Halo 2 the player plays as both Master Chief and The Arbiter a Covenant Elite, which allows the player a more personal view on Covenant society

It can be played on four difficulty levels (There is a fifth difficulty which is the highest of all the difficulties known as iron which is only unlocked in Halo 2 and Halo 3 through the collection of the Iron skull), 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

A Brilliant walk through for some of these levels (and a few others) can be found here http://nikon.bungie.org/gameplay/halo3_slaso/


 * 1) Arrival (Cutscene Only) (Non-playable) Tutorial (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 with some kind of transport. In Halo: Combat Evolved, he is in a Longsword. In Halo 2, he is in the Forerunner Dreadnought. In Halo 3, Master Chief is stranded in the remains of the UNSC Frigate, Forward Unto Dawn, which is drifting in an unknown part of space.
 * All of the games also begin with the Master Chief in space. In Halo: Combat Evolved he is on the Pillar of Autumn; in Halo 2 he is on Cairo Station; and in Halo 3, he is on the Dreadnought, but only briefly.
 * Halo: Combat Evolved starts with Master Chief leaving a cryo pod and Halo 3 ends with him entering one again.
 * There are 35 levels total in the Halo Trilogy. 35/5=7. Another Seven reference.
 * 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.