Halo Infinite Campaign: Complete Mission Walkthrough
Welcome, Spartan. This is your ultimate guide to surviving the open world of Zeta Halo. Unlike any Halo franchise campaign before, Infinite blends classic linear missions with a sprawling, hostile landscape. Since the halo release date in December 2021, players have been uncovering its secrets. We’ve compiled everything you need.
Our walkthrough is structured to maximize efficiency while ensuring you don't miss critical upgrades, Audio Logs, or devastating Skulls. Whether you're playing on Heroic or Legendary, these strategies will turn the tide.
💡 Prologue & Key Changes
The game begins with a dire situation. The UNSC Infinity has fallen. Master Chief is adrift. The Banished control the ring. The traditional mission structure is gone – replaced by Forward Operating Bases (FOBs) you liberate to gain tactical advantages. Understanding this open-world loop is crucial before diving into main objectives.
Part 1: Foundation & The Tower
Mission 1: Warship Gbraakon – The opening is a tight, classic Halo corridor shooter. Grab the Disruptor early; it's excellent for stripping shields. The verticality here is a hint of things to come. After the halo infinite trailer, many wondered about the grappling hook – you get it here. Use it aggressively for mobility and melee kills.
The vast, mysterious landscape of Zeta Halo. Use your Grappleshot to traverse quickly.
Mission 2: Foundation – This is your introduction to the open world. Your first priority should be to locate and secure nearby FOBs. Each FOB unlocks fast travel, weapon pads, and vehicle call-ins. We highly recommend consulting our halo infinite interactive map for precise FOB and collectible locations.
1.1 The Tower – First Major Boss Fight
Boss: Chak 'Lok. This Elite Ultra is your first real test. The arena is multi-leveled. Key Strategy: Keep moving! Use the grapple to swing between floors. His energy sword is a one-hit kill, so maintain distance. Stock up on Plasma Carbines or the Heatwave before the fight – they shred his shields. Defeating him grants access to the first major area of the map.
Part 2: Consolidating The Ring
With The Tower cleared, the southern region opens up. This is where the open-world gameplay truly shines. Main missions (Recovering the Weapon, Excavation Site) are marked with gold hexagons. Side activities (Marine Squads, High Value Targets, Banished Outposts) are essential for upgrading your gear.
🔹 Upgrade Priority: Focus Spartan Cores on your Grappleshot (reduce cooldown) first, then Shield Core. The thruster is useful but secondary. Maxed Grapple transforms the game.
🔹 Weapon Cache: Locate all Armories to permanently unlock weapons at FOBs. The Ravager (charged shot) is underrated for area control. The Cindershot is a game-changer against clusters of enemies.
If you're planning to tackle this with a friend, check out our separate guide on how to play halo infinite campaign co op for specific co-op tactics and synchronization tips.
2.1 Excavation Site & The Dig Site Boss
This mission leads you deep into a Banished mining operation. The environment is dark and confined, perfect for the Pulse Carbine and Gravity Hammer. The boss here, a Brute Chieftain, is aggressive. Use the grapple to dodge his charges and hammer swings. There are explosive canisters scattered around – shoot them when he's nearby.
Part 3: Skulls & Audio Logs – The Collector's Path
Skulls are hidden modifiers that change gameplay (e.g., Boom doubles explosion radius, IWHBYD triggers rare dialogue). They are often tucked away in obscure geometry or require sequence breaks using the Grappleshot. One is found on a hidden ledge during "The Sequence" mission – look for a broken bridge section.
Audio Logs provide critical lore about the Ring, the Banished, and the fate of the Infinity. Collecting them all paints a tragic picture of the conflict. Many are in Banished structures or near wrecked UNSC patrols.
Part 4: The Road to the House of Reckoning
The final act funnels you back into a more linear, intense series of missions. Mission: Nexus involves disabling a Banished spire. It’s a large-scale battle. Hijacking a Banshee or calling in a Scorpion tank from a nearby FOB makes this much easier.
The House of Reckoning is a multi-stage arena challenge. You'll face waves of enemies, including multiple Hunter pairs. Remember: their weak spot is the exposed orange flesh on their backs. Use the Grappleshot to zip behind them. Stock up on power weapons before entering; there are limited resupplies inside.
⚠️ Final Boss: Escharum & The Harbinger
The climax is a two-phase fight. Escharum is a brutal, straightforward brawl. Keep pillars between you and his chain gun. Phase 2 introduces The Harbinger, who teleports and uses area-of-effect attacks. Constant movement and using the repulsor (if upgraded) to deflect her projectiles is key. The final cutscene sets the stage for the future of the franchise.
Post-Campaign & Endgame
After the credits, you're returned to the open world to mop up side content, find all collectibles, and achieve 100% completion. All FOBs, outposts, and targets remain. This is the time to experiment with different weapon combos and enjoy the power fantasy. Stay tuned for new narrative events via halo infinite update patches.
For those who also enjoy competitive play, mastering the Campaign will improve your skills for halo infinite multiplayer. Map awareness, weapon proficiency, and movement translate directly. If you're climbing the competitive ladder, our halo infinite ranks 2024 guide is essential reading.
Final Spartan Standing: Halo Infinite's Campaign is a triumphant return to form that also innovates. It respects the past while grappling with the future. This walkthrough is a living document; we'll update it with new discoveries and meta-strategies. Now get out there, Spartan. Zeta Halo won't liberate itself.