The completionist community for Halo: Campaign Evolved just got a serious assist. A full 100% collectibles walkthrough is now available, mapping out every Terminal and Skull hidden across the game's 10 main missions and 3 bonus missions. If you've been running through levels and feeling like you're missing something, you probably are.
Why 100% completion is harder than it looks
Terminals are the kind of collectible that punishes casual exploration. They look like standard computer terminals with a screen and a small red light, and they blend into the environment well enough that you can clear an entire level without spotting one. There are 13 total, one per mission, and missing even a single one means backtracking through areas you've already cleared.
Here's the thing: the logs locked behind these Terminals aren't just padding. Each one carries lore tied to the world, and they're only accessible through the main menu's Collectibles section after you've physically interacted with the screen in-game. You can't read them until you've found them first.
Every mission, every Terminal
The full breakdown covers all 13 Terminals by mission. The main campaign runs through The Pillar of Autumn (Terminal: Approach), Halo (Forgotten), The Truth and Reconciliation (Inquisitor), The Silent Cartographer (Status Update), Assault on the Control Room (Tangent I), 343 Guilty Spark (Tangent II), The Library (Tangent III), Two Betrayals (Alone), Keyes (Consumed), and The Maw (Arrival).
The three bonus missions round out the list: Boarding Action holds Terminal: The Path, The Most Dangerous Game contains the Penitent Report, and Heavy Burden closes things out with Harmonious Clarity.
Collectibles menu terminal logs
Skulls add another layer to the hunt
Terminals are only half the picture. Skulls are the other major collectible category, and they come with actual gameplay modifiers attached. The full guide covers both, which means players chasing a clean completion run need to track two separate collectible types simultaneously across 13 missions.
What most players miss is that Skulls and Terminals rarely sit near each other in the same level. You're not clearing one area and picking up both. They're placed independently, which makes mission-specific guides far more useful than a general "explore everywhere" approach. For a closer look at Skull placement and the exact effects each one triggers, the all Skulls and what they do guide is worth bookmarking alongside the Terminal list.
The bigger picture for Halo completionists
This is a shooter built around replayability, and the collectibles layer adds genuine incentive to revisit missions you've already finished. The lore in those Terminal logs fills in details that the main campaign doesn't spell out, and some of the Skull modifiers change how combat plays out in ways that make repeat runs feel different.
The key here is having a reliable reference before you start rather than discovering mid-playthrough that you've missed three Terminals across the first five missions. The full Halo: Campaign Evolved guide collection has mission-specific walkthroughs for every level, so you can go in with exact locations rather than hoping your instincts are good enough.