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 player at a time through the canonical storyline of the Halo trilogy.

It can be played on several difficulty levels, listed in order from most difficult to the easiest: Legendary, Heroic, Normal, and Easy.

Halo: Combat Evolved Campaign Levels

1. Pillar of Autumn
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
2. The Armory
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. Sierra 117
2. Holdout
3. Tsavo Highway
4. The Storm
5. Cleansing
6. Refuge
7. Last Stand
8. The Key
9. Return

Note: Except for the first, third and fourth stage, these names are taken from the list of Halo 3 Achievements. However, the first stage is officially known as "Sierra 117," in contrast with the "Landfall" designation in the Achievements list. Therefore, it stands to reason that the remaining levels will have different titles than their Achievements as well.