Sergeant Avery Johnson joins Master Chief in the three-mission Operation: METEORITE prequel: Boarding Action, The Most Dangerous Game, and Heavy Burden. They are missions 11 through 13 in the complete campaign order used by this guide.
Sergeant Johnson missions in order
Operation: METEORITE is a three-part story featuring Master Chief and Sergeant Avery Johnson. In the complete 13-mission sequence, the prequel chapters follow the ten rebuilt Alpha Halo missions.
- Mission 11: Boarding Action
- Mission 12: The Most Dangerous Game
- Mission 13: Heavy Burden
Where Operation: METEORITE fits
The Operation: METEORITE story is set one year before Halo: Combat Evolved. The guide lists it after the rebuilt Alpha Halo campaign so the main story order remains easy to follow while the three new missions stay grouped together.
Players who prefer story chronology can treat METEORITE as a prequel. Players following the in-game campaign index can use the full mission directory to confirm the available order.
What is confirmed about Johnson's role?
Official product material pairs Sergeant Johnson with Master Chief in Operation: METEORITE. That confirms his story role in the three-mission arc, but it should not be used to invent mission objectives, dialogue, collectibles, or playable-character options.
The linked mission pages separate confirmed campaign placement from practical, spoiler-light preparation. Encounter details are only added when they can be checked against the released game or an official source.
Frequently asked questions
Which Halo: Campaign Evolved missions feature Sergeant Johnson?
Sergeant Johnson appears in the three Operation: METEORITE missions: Boarding Action, The Most Dangerous Game, and Heavy Burden.
How many Sergeant Johnson missions are there?
There are three missions in the Operation: METEORITE arc.
Are the Johnson missions part of the original Alpha Halo campaign?
No. Operation: METEORITE is a new prequel arc set one year before Halo: Combat Evolved and is separate from the ten rebuilt Alpha Halo missions.