The reworked Codex system explained in RELOADIAN is no longer a passive lore book but a critical progression path that unlocks powerful, build-defining Resonance Mods by completing specific in-game challenges. Since the massive Patch 2.7 overhaul, this once-neglected menu has become the secret to crafting the most dominant endgame builds, shifting the focus from simply collecting entries to strategically hunting them down.
Forget the old system of minuscule, passive stat boosts. The new Codex is an active pursuit that directly rewards your mastery over the world's factions, arsenal, and hidden secrets with tangible, slot-able power. This guide breaks down exactly what the new Codex tracks, how the Resonance system works, and why you should absolutely be paying attention to it.
What Does the Codex Actually Track?
The Codex is your personal encyclopedia of the world, but every entry now has a completion objective tied to it. Completing a category of entries is the key to unlocking the system's true potential. The Codex is divided into four primary sections, each with its own set of challenges and rewards.
The Bestiary: More Than Just a Kill Counter
This is the heart of the Codex for most players. It tracks every enemy type you encounter, from the lowly Syndicate Thug to the terrifying Tyrant-Class Mechs of the Automaton Collective. Each enemy entry has multiple tiers of completion.
- Tier 1: Basic Analysis. Achieved after killing a small number of an enemy (e.g., 25 Grunts). Unlocks basic lore and reveals weak points.
- Tier 2: Combat Proficiency. Requires more kills and specific kill methods (e.g., 100 Grunts, with 25 being weak-point kills).
- Tier 3: Total Domination. The final challenge, often requiring hundreds of kills and defeating the faction's rarer, more powerful variants (like a Corrupted Sentry or an Alpha Ravager).
The key takeaway is that completing an entire faction's Bestiary—meaning achieving Tier 3 on every single enemy type within that faction—is what unlocks a faction-specific Resonance Mod. This makes targeted farming of specific enemy types a core endgame activity.
The Arsenal: Mastering Your Loadout
Every weapon, armor set, and piece of cyberware you acquire is logged in the Arsenal section. Similar to the Bestiary, these entries are not just for show. Completing an Arsenal entry typically involves achieving a certain number of kills with a weapon or using an ability a set number of times. Finishing a full weapon family (e.g., all 'Helios' energy rifles) or a complete armor set's entry often rewards you with exclusive shaders, charms, or even unique crafting recipes for enhanced versions of that gear.
Cartography & Research: The Explorer's Reward
This section tracks your exploration progress. It logs every major location, hidden cache, and scannable lore object you find. For completionists, this is a treasure trove. Completing all entries for a specific zone, like the Rust-Canyons of Acheron or the neon-drenched levels of Neo-Kyoto, provides a permanent boost to your resource find rate in that area. More importantly, uncovering all the hidden lore fragments for a specific storyline (e.g., 'The Fall of Titan Station') can unlock unique dialogue options with NPCs or even secret side-quests.
The Old vs. New Codex: Why the Rework Matters
Before Patch 2.7, the Codex was a background system that most players ignored. Completing an entry for, say, the Scrapper enemy faction might grant a permanent but almost unnoticeable +0.5% damage bonus against them. The grind was immense for a reward that had no meaningful impact on gameplay. It was a classic case of a system that existed purely for the sake of checking a box.
The rework transformed this entirely. Instead of tiny, passive stats, the system is now built around a single, powerful reward: Resonance Mods. This change turned the Codex from a passive checklist into an active pillar of build-crafting.
Infographic comparing the old and new Codex systems in RELOADIAN.
Here's a direct comparison of the old and new systems:
| Feature | Legacy Codex (Pre-Patch 2.7) | Resonance Codex (Post-Patch 2.7) |
|---|---|---|
| Primary Reward | Small, passive stat boosts (+1% damage vs. Faction X) | Unique, slot-able Resonance Mods |
| Player Incentive | Low; rewards were not worth the grind | High; mods enable powerful build synergies |
| Gameplay Loop | Kill things until a bar fills up in the background | Actively hunt specific enemies to unlock a targeted piece of gear |
| Impact on Builds | Negligible | Foundational; many endgame builds are built around a specific mod |
| Endgame Role | A side activity for completionists | A core progression path alongside gear farming |
This shift is the single most important change in RELOADIAN's endgame. Your build is no longer just about the gear you find; it's about the knowledge you've earned and the challenges you've overcome in the Codex.
How Do Resonance Mods Work?
Resonance Mods are the ultimate prize of the new Codex system. They are powerful, unique perks that can be slotted into a special, dedicated slot on high-end armor pieces. You can only have one Resonance Mod active at a time, making your choice a defining element of your build.
Unlocking Your First Resonance Mod
To get a Resonance Mod, you must achieve 100% completion in a major Bestiary category. For example, to unlock the 'Voltaic Overdrive' mod, you must find, fight, and complete every single Tier 3 objective for every enemy in the 'Automaton' faction. This includes common units like Sentries and Drones, but also the rare and dangerous Tyrant-Class Mechs that only spawn in high-level zones or specific missions.
Once you complete the final entry, the Resonance Mod is automatically added to your inventory. It's a permanent, account-wide unlock.
Annotated diagram of the Resonance Mod slot in RELOADIAN's UI.
Slotting and Synergy
Endgame armor (Epic and Legendary rarity) comes with a dedicated Resonance Slot. These mods are so potent because they often create powerful synergies that aren't possible with standard mods.
For example, Voltaic Overdrive causes your critical hits with tech weapons to arc chain lightning to nearby enemies. If you combine this with a build focused on high critical hit chance and a fast-firing tech SMG, you become an unstoppable force for clearing large groups of enemies. The goal is to match your Resonance Mod with your weapon choice, skills, and other gear mods to create a cohesive and devastating build.
Examples of Top-Tier Resonance Mods
- Voltaic Overdrive (Automaton Faction): Critical hits with Tech weapons create a chain lightning effect that strikes up to 3 additional enemies.
- Hive Mind Toxin (Xenobeast Faction): Applying a poison status effect to an enemy causes them to release a toxic cloud on death, poisoning other nearby enemies.
- Kinetic Overload (Syndicate Faction): Melee final blows grant a stacking buff that massively increases the damage of your next shotgun blast.
- Reality Glitch (Void Cult Faction): Dodging through an enemy attack briefly phases you out of reality, making you invulnerable for 1.5 seconds and reloading your equipped weapon. (5-second cooldown).
Is Grinding the Codex Worth It?
In a word: absolutely. While the time investment to complete a full Bestiary faction is significant, the reward fundamentally changes how you play the game. A well-chosen Resonance Mod is often more powerful than any single piece of Legendary gear.
The grind also encourages smarter play. Instead of running the same boss on repeat, it pushes you to explore the entire world, hunt down rare spawns, and master different combat techniques to fulfill the Tier 3 objectives. It adds a layer of purpose to the open world that was previously missing from the endgame.
For casual players, it might seem daunting. But for anyone serious about pushing high-level content like the timed Bastion runs or the endless Horde mode, a Resonance Mod is not just an advantage—it's practically a requirement. The power spike you get from unlocking your first one is one of the most satisfying moments in the game.
Comic grid showing a player using the Codex to defeat a tough boss.
Frequently Asked Questions about the Codex
Are Codex unlocks and Resonance Mods account-wide?
Yes. Once you complete a Bestiary entry or unlock a Resonance Mod, it is available for all characters on your account. Your progress is shared, so you can work on completing different factions with different characters if you choose.
Can I reset my Codex progress?
No, there is currently no way to reset your Codex progress. It's a permanent record of your accomplishments in the world of RELOADIAN.
What's the fastest way to complete the Bestiary?
Targeted farming is key. Identify which enemy you need and find where it has the highest spawn density. For example, the 'Scrapper Fields' in the Acheron Wastes is the best place for farming Scrapper-type enemies. For rarer spawns like the Alpha Ravager, you may need to repeatedly run a specific late-game mission like 'Operation Downfall' where it's a guaranteed encounter.
Are Resonance Mods required to beat the main story?
Not at all. The main campaign is balanced to be completed with standard gear and mods. Resonance Mods are designed as an endgame pursuit for players looking to optimize their builds for the most challenging post-story content.
Which Resonance Mod should I go for first?
It depends on your preferred playstyle. If you love fast-paced, close-quarters combat with SMGs and shotguns, the Syndicate's Kinetic Overload is a fantastic first choice. If you prefer a tactical, ranged approach with tech weapons, the Automaton's Voltaic Overdrive is arguably the most powerful mod in the game for crowd control.
A New Pillar of Progression
The transformation of the Codex from a dusty encyclopedia into the Resonance Mod system is one of the best post-launch updates RELOADIAN has received. It adds a rewarding, long-term goal that celebrates mastery of the game's world and its inhabitants. It's not just about getting better loot anymore; it's about becoming a true expert on your enemies and turning that knowledge into undeniable power. If you've been sleeping on the Codex, it's time to wake up and start hunting.