Halo Infinite campaign co-op achievements and local split-screen co-op reveal a pivotal Winter Update and its lasting impact.
As a longtime Halo player, I still remember the strange mix of excitement and disappointment that hit me when 343 Industries finally brought campaign network co-op to Halo Infinite. The Winter Update arrived on November 8, 2022, and it added 24 new achievements worth 420 Gamerscore, plus Mission Replay, Forge Beta, two new maps, a free 30-tier battle pass, and a new mode called Covert One Flag. From my 2026 perspective, that update feels like a fascinating time capsule. It was a moment when Halo Infinite tried to win back campaign fans while quietly closing the door on a feature many of us had begged for: local split-screen co-op. How did we get there? And why do those 24 achievements still matter to me today?
🎮 The Campaign That Launched Without A Friend
Halo Infinite’s multiplayer component came out in November 2021, but the campaign did not launch until the full game’s release on December 8, 2021. I remember the reviews being positive, and like many players, I fell in love with the new Grappleshot mechanic. Swinging across Zeta Halo felt fresh, and the open-ended mission design gave me a new kind of Halo freedom. But something was missing. Campaign co-op was not there at launch, and 343 Industries promised it would be added later. Local split-screen co-op had been absent from Halo 5, and the developer had promised it would return in Halo Infinite. Instead, 343 canceled split-screen co-op for the campaign. That decision still stings. Was online-only co-op really the best compromise? For many of us, the answer was no.
🏆 The 24 Achievements That Arrived With Co-Op
When Campaign Network Co-Op and Mission Replay launched, they brought a hefty list of achievements. Some could be earned solo, but others required me to team up with up to three friends. Mission Replay made it easier to chase specific goals, because I no longer had to restart an entire save just to replay a single mission. Here is the full list as 343 Industries announced it:
| Achievement | Requirement | Gamerscore |
|---|---|---|
| Mix Things Up | Get at least one kill with every available weapon and grenade on the Banished ship. | 20G |
| Stick Around | Defeat Tremonius with the Skewer. | 20G |
| Rapid Unscheduled Disassembly | Destroy both Phantoms before they leave Outpost Tremonius. | 20G |
| Out with a Bang | Kill the Tower commander with a Plasma grenade. | 20G |
| Workplace Safety Violation | Kill an enemy with the Banished mining laser. | 20G |
| Conservation of Momentum | Complete the Conservatory in less than 15 minutes. | 20G |
| It Really Does Beat Everything | Eliminate all enemies at the South Beacon with a Scorpion Tank. | 20G |
| Vintage Fisticuffs | In the Nexus, kill the Hunter pair with melee final blows. | 20G |
| Spire Stalker | Kill 40 enemies with the Stalker Rifle at the Command Spire. | 20G |
| Turnabout is Fair Play | Kill one Chieftain and use his turret to kill another in the Repository. | 20G |
| More Than He Bargained For | Defeat War Chief Escharum without ever fully losing your shields. | 20G |
| What's Rightfully Ours | In co-op, capture all Forward Operating Bases on any difficulty. | 10G |
| Wardens of Zeta | In co-op, complete all seven Banished outposts on any difficulty. | 10G |
| First Responders | In co-op, answer all UNSC distress calls on any difficulty. | 10G |
| Hunting Party | In co-op, eliminate all Banished High-Value Targets on any difficulty. | 20G |
| Air Raid | In co-op, kill 100 enemies while all players are riding air vehicles. | 10G |
| Cow Catcher | In co-op, splatter 50 enemies while riding in a vehicle with another player. | 10G |
| Gruesome Twosome | In co-op, kill 50 enemies while riding a Mongoose with another player. | 10G |
| Keep It Steady | Kill 5 enemies with a Sniper Rifle from a vehicle. All players aboard vehicle share progress. | 10G |
| Rolling Thunder | Kill 5 enemies with a Gravity Hammer from a vehicle. All players aboard vehicle share progress. | 10G |
| Inseparable | In co-op, kill a Hunter and its bond brother within three seconds of each other. | 20G |
| You, Me, Same Page | In co-op, destroy all cooling towers at the Dig Site within 60 seconds of each other. | 20G |
| Controlled Demolition | In co-op, destroy four Fuel Silos within five seconds at either Ransom Keep or the Forge of Teash. | 20G |
| Wolves at the Doors | In co-op, lower all three gates within 15 seconds of each other at Riven Gate. | 20G |
🧨 Why These Achievements Still Matter In 2026
Many of these achievements task players with performing very specific actions. Some are timed, like completing the Conservatory in under 15 minutes or destroying cooling towers within 60 seconds of each other. Others are more lenient, because they can be earned on any difficulty. I appreciate that balance. It gives solo players a path, while co-op groups get chaotic challenges that force communication. Have you ever tried to coordinate four Fuel Silos in five seconds with three friends? It is equal parts hilarious and infuriating. 343 Industries also warned that some achievements might start showing up before their scheduled launch date, but players could not complete them until the update went live on November 8, 2022. That little detail felt like a tease, but it also built anticipation.
❄️ The Winter Update Was Bigger Than Co-Op
Campaign Network Co-Op and Mission Replay were the headline features, but the Winter Update did more. It added Forge Beta, two new maps called Detachment and Argyle, a free 30-tier battle pass, the Covert One Flag mode, and other quality-of-life enhancements. Looking back from 2026, I can see how hard 343 Industries was trying to reshape Halo Infinite’s post-launch story. Did it fully work? Not always. But for a stretch, the game felt busier and more social than it had at launch. Halo Infinite is available on PC, Xbox One, and Xbox Series X. I still return to it sometimes, and when I do, those 24 achievements sit there like a scrapbook of the Winter Update. Would I trade them for split-screen co-op? Honestly, no. But I can still wish we had both. 343 Industries detailed the update on Halo Waypoint, and for me, that announcement remains one of the most bittersweet moments in modern Halo history.
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