BRIEF SUMMARY
Codex Lore: PARASITISM 3/5
OBJECTIVES
NO TACTICAL OBJECTIVES ASSIGNED TO THIS NODE.
PARASITISM 3/5
ANALYZING… FILE TYPE: Decrypted Dictation PERIOD: Colony Era TOPIC: Biotic sample experiments SUMMARY: Decrypted colony-era experiments on potential applications of an unknown biotic sample. This report belongs to F. Moreno, UESC biohazard technician. It does not adhere to any known safety standards. =================================================================== //DECRYPTING EXPERIMENT 55: "…principal investigators dead or missing. Caruso [REDACTED], security around the sample is down. Don't have to worry about my career anymore… Took the cells we were able to collect from beneath the claws of the god-damned [REDACTED]. Added 1 mL to tissue growth medium yesterday. Checked this morning. Growth medium changed. Colors. Patterns. Smells warm, alive, saline, metallic. Beats like a heart." //DECRYPTING EXPERIMENT 58: "…modified growth medium unstable. Overspills containers. Shoved it in a containment field but it complains. Low grumpy gurgle. [REDACTED] must add something to raw organic material. Purpose? Life? Desire?" //DECRYPTING EXPERIMENT 67: "…deceased plant versus animal versus fungal specimens exposed to modified growth medium. Strong benefit for animal and fungal, but different effects. Not pursuing fungal, too many similarities to Song's ramblings on [REDACTED] [REDACTED] wrong kind of attention. No, this thing wants meat." //DECRYPTING EXPERIMENT 91: "…should work, must work, doesn't work. Medium accelerates life. Medium has characteristics for revivifying necrotic tissue. Eye for eye, more than enough. So why not us? What's wrong with human cells? I've given you blood, all the blood I can! I heard the old stories! I believe them! You have to save us again!" [The remaining files are increasingly fragmented and incoherent, with no experimental data.] =================================================================== TYPE: TEXT [X]; AUDIO [ ]
About Codex in Marathon
The Codex is one of the most important progression systems in Marathon because it keeps track of the things that stay with your account over time. It covers achievements, collections, lore entries, cosmetics, titles, and other rewards tied to what you do in the game, and you can check it outside of your runs.
What makes the Codex stand out is that it is not just a lore menu. Marathon connects it to contracts, narrative items, and other in-game milestones, so the more you explore and complete, the more entries and rewards you unlock. It also carries over between seasons, even when things like gear, faction progression, contract progression, and player level reset.
FREQUENTLY ASKED QUESTIONS
The Codex is Marathon’s long-term progression hub. It tracks things like achievements, lore-related discoveries, cosmetics, titles, and other milestone-based rewards, and it can be viewed outside of runs.
The Codex keeps a record of what you have completed and found in Marathon. That includes progress from contracts, narrative items, and other achievements, along with the rewards tied to those goals.
Yes. Codex progression carries over between seasons, which makes it one of Marathon’s main long-term systems even when seasonal resets affect gear and other progression.
The Codex includes free cosmetics and other unlocks tied to objectives. You can get rewards like weapon styles, stickers, profile emblems, profile backgrounds, titles, runner shell cosmetics, and loadout packages.
Codex entries are unlocked by doing things like completing contracts, finding narrative items, completing objectives, and hitting other in-game milestones. As you keep playing, more entries and rewards open up.
The Marathon Codex page helps you understand what the Codex is, how it works, what kind of rewards it offers, and why it matters for long-term progression. It is also a useful place to get a simple view of the game’s achievement and reward tracking system.