All 13 Halo: Campaign Evolved missions in order: the 10 classic missions plus 3 Operation METEORITE prequels, with collectibles, length and difficulty notes.
Halo Campaign Evolved Missions — All 13 Missions in Order
Halo: Campaign Evolved has 13 missions: the ten classic missions from Halo: Combat Evolved in their original order, plus three new prequel missions grouped under Operation: METEORITE (Boarding Action, The Most Dangerous Game, Heavy Burden). Every mission hides three skulls and one terminal, and every mission can be replayed at any time through Chapter Select.
This page is the master table: order, length, difficulty, collectibles and the unlock rules. Detailed combat walkthroughs are split across missions 1-3, missions 4-7, missions 8-10 and the Operation METEORITE guide.
Full Mission List (10 Classic + 3 METEORITE)
| # | Mission | Type | Approx. length | Collectibles (3 skulls + 1 terminal) |
|---|---|---|---|---|
| 1 | The Pillar of Autumn | Classic | ~30-40 min | Speed Limit, Magnified, Perspective + Approach |
| 2 | Halo | Classic | ~45-60 min | Give & Take, Grunt Funeral, Floor Is Lava + Forgotten |
| 3 | The Truth and Reconciliation | Classic | ~45-60 min | Iron, Endurance Spec, Foreign + Inquisitor |
| 4 | The Silent Cartographer | Classic | ~40-50 min | Bandana, Acrophobia, Hip Fire + Status Update |
| 5 | Assault on the Control Room | Classic | ~50-70 min | IWHBYD, Angry, Cowbell + Tangent I |
| 6 | 343 Guilty Spark | Classic | ~30-40 min | Fog, That's Just... Wrong, They Come Back + Tangent II |
| 7 | The Library | Classic | ~60-90 min | Tilt, Pop, Famine + Tangent III |
| 8 | Two Betrayals | Classic | ~50-70 min | Tough Luck, Black Eye, Mythic + Alone |
| 9 | Keyes | Classic | ~40-50 min | Catch, Blind, Piñata + Consumed |
| 10 | The Maw | Classic | ~30-40 min | Stowed Reload, Boom, Thunderstorm + Arrival |
| 11 | Boarding Action | METEORITE | ~20-30 min | Malfunction, Johnny Ammo Seed, Leadhead + The Path |
| 12 | The Most Dangerous Game | METEORITE | ~30-40 min | Temperamental, Recession, Ghost + Penitent Report |
| 13 | Heavy Burden | METEORITE | ~30-40 min | Eye Patch, Grunt Birthday Party, Efficient + Harmonious Clarity |
Times are community-reported estimates (HowLongToBeat and playthrough data), not official figures. The Library and Two Betrayals are the longest; the METEORITE missions are compact by design — each runs 20-40 minutes.
Halo Studios has not published official per-mission timings. The figures above are averages from HowLongToBeat entries and guide-writer playthroughs, and they vary with difficulty and collectible hunting.
Mission Order & Chapter Select
The ten classic missions play in their original order and cannot be reordered on a single playthrough. Operation: METEORITE missions sit in a separate bonus-missions menu — available immediately, playable in any order, and entirely optional if you only want the classic story.
Chapter Select unlocks as you complete missions, and lets you replay any completed mission with your choice of Rally Point (a mid-mission checkpoint). This is how you mop up missed skulls and terminals without replaying entire levels — see the skulls and terminals guides.
Official source: Steam store page — Halo: Campaign Evolved — "A broader arsenal of weapons, vehicles, enemies, and gameplay-modifying Skulls... plus a brand-new three-mission adventure featuring the Master Chief and Sgt. Johnson."
How Many Missions & How Long Each
- Total: 13 missions — 10 remade classics + 3 new prequel missions.
- The original 10 follow CE's structure with trimmed pacing and better wayfinding; the remake cut some backtracking (particularly in the interior sections), which is why several missions feel a touch shorter than 2001.
- The 3 prequel missions are new content, set in 2551, starring Master Chief and Sgt. Johnson aboard the Covenant ship Triumph of Tolerance.
- The whole campaign is roughly 8 hours on a focused Normal run, 12 hours with collectibles, and 25-30 hours for 100% (see the how-long-to-beat guide).
How to Unlock the Bonus Missions
Operation: METEORITE is available from the start — you don't unlock it by beating the main campaign. Select "Bonus Missions" (Operation: METEORITE) from the campaign menu. Because the arc is a prequel, playing it before or after the main story is fine; the walkthrough recommends playing it after the classics for maximum impact.
Per-Mission Collectibles Breakdown
Every mission's collectible set feeds two achievements: the mission's own 20G "Find all skulls and terminals in X" award, and the gold Collector's Addition (50G) for all 39 skulls + all 13 terminals. Per-mission routes:
- Missions 1-4 (Pillar of Autumn → Silent Cartographer): skulls-1 page + terminals
- Missions 5-8 (AotCR → Two Betrayals): skulls-2 page
- Missions 9-13 (Keyes → Heavy Burden): skulls-3 page
The most efficient collecting method: replay each mission once via Chapter Select, grab its three skulls and terminal in that single run, then move on. You'll clear the mission achievement and feed Collector's Addition simultaneously.
Difficulty Notes Per Mission
- The Library is the consensus hardest classic mission (relentless Flood waves) — see missions-2 for loadout advice.
- Two Betrayals and Keyes are the other Legendary walls, the latter partly because of the Catch skull's timed grab on Heroic+.
- The Most Dangerous Game is the hardest prequel mission — open arenas, Wraiths, Brutes, and the three-part Temperamental puzzle (skulls-3).
- Co-op is available on every mission for up to 4 players with full crossplay — co-op guide.
FAQ
How many missions are in Halo: Campaign Evolved? 13 total: the 10 classic Halo: Combat Evolved missions plus 3 new Operation: METEORITE prequel missions.
What are the bonus missions in Halo: Campaign Evolved? Boarding Action, The Most Dangerous Game and Heavy Burden — together called Operation: METEORITE, a prequel arc set in 2551 starring Master Chief and Sgt. Johnson aboard a Covenant ship.
How long is each mission in Halo: Campaign Evolved? Roughly 30-70 minutes for the classic missions (The Library and Two Betrayals are longest) and 20-40 minutes each for the prequel missions. These are community estimates, not official figures.
Can you play missions out of order? The ten classic missions are linear on a first run, but Chapter Select lets you replay any completed mission from any Rally Point. The three METEORITE missions are always available and can be played in any order.
Do I have to finish the campaign to unlock Operation: METEORITE? No — the bonus missions menu is available from the start.
Related Guides
- Halo: Campaign Evolved Walkthrough — Full Story & Ending
- Halo: Campaign Evolved Missions 1-3 Walkthrough
- Halo: Campaign Evolved Missions 4-7 Walkthrough
- Halo: Campaign Evolved Missions 8-10 Walkthrough
- Halo: Campaign Evolved Operation METEORITE Guide
- Halo: Campaign Evolved How Long to Beat
Official resources: Steam store page · IGN — Halo: Campaign Evolved Wiki · Push Square — All Missions · HowLongToBeat
Last Updated: August 13, 2026
More Halo: Campaign Evolved Guides
Every skull in Keyes, The Maw and the three Operation METEORITE missions — with exact routes, the special unlock conditions and how each one works.
The complete Halo: Campaign Evolved achievement guide: all 58 achievements and trophies with unlock conditions, the fastest 100% route, and the PS5 Platinum.
The Halo: Campaign Evolved beginner's guide: a first-hour roadmap, how difficulty works, weapon basics, when to start skull hunting, and co-op from the start.
Campaign Remix in Halo: Campaign Evolved: how to unlock it (any 3 skulls), what changes — randomized enemies and weapons — and whether it's worth playing.
Halo: Campaign Evolved co-op and crossplay: 4-player online co-op across PC, Xbox and PS5, cross-progression via Microsoft account, and console split-screen.
All Halo: Campaign Evolved editions compared: Standard $49.99, Premium $69.99 and the sold-out Collector's Edition, plus the $20 Premium Upgrade.
Is Halo: Campaign Evolved on Game Pass? Yes — day one with Ultimate and PC Game Pass. Which tiers include it, and how the Game Pass version compares to Steam.
How long is Halo: Campaign Evolved? Main story ~8 hours, main + extras ~12, 25-30 hours for 100% — with per-mission estimates and honest caveats.