The biggest surprise in Halo: Campaign Evolved, the ambitious 2026 remake, isn't just the Unreal Engine 5 facelift or its shocking debut on PlayStation. It's the inclusion of three entirely new, surprisingly substantial bonus missions. These aren't just challenge maps or a tacked-on horde mode; they are fully-fledged prequel operations set a year before Master Chief is awakened aboard the Pillar of Autumn. They focus on the gritty, straightforward war between the UNSC and the Covenant, introducing new gameplay elements and story beats that re-contextualize the classic campaign that follows.
Accessible at any time directly from the main menu, these missions serve as a fantastic appetizer before diving into the main course or a welcome encore for veterans who have the original game's encounters memorized. They offer a fresh challenge, a different narrative flavor, and some exclusive cosmetic rewards for your trouble. For anyone looking to get the most out of this remake, understanding what these missions are and what they bring to the table is essential.
How do you access the new missions?
Unlike many games that hide bonus content behind campaign completion or obscure collectibles, Halo: Campaign Evolved makes its new prequel content immediately and easily available. There are no hoops to jump through, no specific difficulty you need to beat, and no part of the main story you need to reach first.
To play the three new missions, simply navigate to the main menu upon launching the game. You will find a dedicated option, likely labeled 'Bonus Missions' or 'Prequel Operations', that takes you to a separate selection screen. From there, you can choose any of the three missions to start, complete with their own unique introductory cutscenes. This allows players to experience the new content whenever they wish—whether that's as a warm-up, a break from the main campaign, or a post-credits adventure.
Halo: Campaign Evolved in-game screenshot
What are these prequel missions about?
The narrative for this new chapter is refreshingly direct. Set a full year before the fateful events on Installation 04, these missions dial the clock back to a time before the Flood, before the Halo rings were anything more than a mystery. The focus is purely on the brutal, attritional warfare between humanity and the Covenant.
A year before the ring
The story framing these missions is presented with a cinematic flair, described as having a 'Star Wars-like' intro that establishes the stakes. They center on Master Chief and the ever-charismatic Sergeant Johnson engaged in a critical operation against Covenant forces. This isn't about saving all of humanity from a galactic parasite; it's about the ground-level conflict that defined the war for decades. Players get to see Chief and Johnson working together in the field, providing a bit of backstory to their dynamic that was only hinted at in the original game. The environments and objectives reflect this focus—less ancient alien mystery, more military sci-fi action. It's a welcome change of pace, showing a different side of the conflict without the universe-ending stakes that come later.
A more talkative Chief
One of the most notable changes for longtime fans will be the characterization of Master Chief himself. In these prequel missions, the famously stoic super-soldier is decidedly more chatty. He communicates more frequently with Johnson and other UNSC forces, offering tactical updates and engaging in more back-and-forth than fans of the 2001 original will remember. This shift makes him feel more like an integrated part of a military unit and less like the silent, unstoppable force he becomes in the main campaign. While it might take some getting used to for purists, it's an interesting creative choice that helps differentiate these missions and gives the developers a chance to build out the world and its characters in a new way.
Halo: Campaign Evolved in-game screenshot
What new gameplay can you expect?
Beyond the narrative setup, the prequel missions introduce significant gameplay changes that shake up the classic Halo formula. They aren't just reskinned levels from the main campaign; they bring new threats, different mission structures, and a distinct level of challenge that feels both fresh and demanding.
The Brutes have arrived
The single biggest addition to the sandbox is the appearance of the Jiralhanae, better known as Brutes. These hulking, formidable enemies were famously absent from the original Halo: Combat Evolved, first appearing in Halo 2. Their inclusion here is a major retcon, but one that adds a fantastic new layer to combat encounters. They appear with new visual designs tailored for this remake and bring their signature aggressive, berserking fighting style. Their presence forces players to adapt their strategies, as the tactics used to take down Elites and Grunts may not be as effective against a charging, armored Brute. This change alone makes the prequel missions feel distinct from any other part of the Campaign Evolved experience.
Halo: Campaign Evolved in-game screenshot
A mixed bag of mission design
The missions themselves offer a variety of experiences, though not all are created equal. Overall, the difficulty is high; they are described as 'surprisingly challenging', so expect to be tested even on normal difficulty settings. The checkpointing can also feel a bit 'weird' or unforgiving in places, which can add to the challenge, for better or worse. The level design includes classic on-foot assaults against entrenched Covenant positions, which is where the gameplay shines brightest. However, the package also includes a flight-based mission. Much like similar vehicle-focused levels in past games like Halo: Reach, this aerial combat section has been noted as something of a weak point, potentially leaving something to be desired for players who prefer Halo's boots-on-the-ground action.
New weapons and enemy variants
To complement the new encounters, players will find new tools of destruction and redesigned foes. The missions are populated with new weapon types and exclusive weapon skins to find and use. This expands the arsenal beyond the iconic original toolkit, giving players new ways to tackle the Covenant war machine. In addition to the Brutes, other Covenant species feature 'new looks', providing some visual variety and suggesting these are different legions or specialized units than those encountered a year later on the Halo ring. These small touches help sell the idea that this is a different time and place in the Halo universe.
What are the rewards for completing them?
Beyond the experience itself, completing the three prequel missions comes with tangible rewards. Players who successfully finish these challenging operations will unlock a set of exclusive cosmetic items. The primary incentives are 'cool Master Chief and weapon skins'. These allow you to customize your appearance in the campaign, adding another layer of replayability and giving you a way to show off your accomplishment of mastering this new content. It’s a modern touch applied to a classic game, providing a concrete reason to dive in and overcome the prequel challenge.
Are they worth playing?
Absolutely. While not flawless—with some inconsistent checkpointing and a potentially underwhelming flight mission—the three prequel operations are a highlight of the Halo: Campaign Evolved package. They provide a genuinely fresh and challenging experience for veterans who know the original game inside and out, while offering newcomers a glimpse into the broader Human-Covenant war. The focus on pure military combat, the introduction of Brutes, and the added character moments for Chief and Johnson make them more than just a simple bonus feature. They are a meaningful and substantial addition that enriches the entire game. If you picked up the remake, these missions are not to be missed.