The introduction of SS-grade equipment, collectively known as the Starforged Havoc set, has completely redefined the endgame meta in Survivor.io. Moving past the traditional Legendary S-grade items, players now aim for these powerful relics that offer dual-path upgrades and massive stat boosts. Central to this progression are two specialized resources: the Eternal Core and the Void Core.
Whether you are looking for the best way to get eternal core survivor io or trying to understand the survivor io void core salvage mechanics, this guide covers everything you need to transition from S-tier to the god-tier SS equipment.
What are Eternal and Void Cores?
In Survivor.io, cores are a specific type of currency used to “cast” (craft) and “forge” (upgrade) SS-grade equipment. They are distinct from the basic tech materials used for standard gear.
- Eternal Core: These are obtained primarily by salvaging equipment from the Eternal set (such as the Lightchaser, Eternal Suit, or Eternal Gloves).
- Void Core: These are obtained by salvaging equipment from the Voidwaker set (such as the Void Power, Voidwaker Emblem, or Voidwaker Treads).
- Relic Core: While not the focus of this guide, Relic Cores are the universal “bottleneck” resource required alongside Eternal and Void cores for every level of Astral Forging on SS gear.
How to Unlock the Core System: Cosmic Cast & Astral Forge
Before you can even see the options to use your cores, you must hit a specific progression milestone. You will not find the core-related menus in your shop or equipment screen until you have crafted your first Legendary (Red) grade equipment.
Once you own a piece of Red gear, two new mechanics become available in the “Merge” menu:
- Cosmic Cast: This is where you spend your cores to create the base SS-grade item.
- Astral Forge: This is where you use additional cores and specific S-grade gear to upgrade the effects of your SS equipment.
Survivor.io How to Get Eternal Core and Void Core
There are two primary ways to accumulate cores: salvaging your existing S-grade gear and participating in high-level game activities.
1. Survivor.io Void Core Salvage (The Primary Method)
The most direct method to get void core survivor io or eternal cores is through the Salvage option within the Astral Forge menu. You can sacrifice S-grade equipment you no longer need to break them down into their component cores.
The “yield” for salvaging depends entirely on the rarity of the item being sacrificed:
- Excellent (Purple) S-Grade Gear: Yields 10 Cores of its type.
- Epic (Yellow) S-Grade Gear: Yields 20 Cores of its type.
- Legendary (Red) S-Grade Gear: Yields 60 Cores of its type.
Pro Tip: Salvaging any piece of S-grade gear also provides Base Tech Materials (e.g., 1,296 materials for a Red item), which are also required for SS crafting.
2. Events and Shop Exchanges
For free-to-play (F2P) players, salvaging is expensive. Fortunately, there are several ways to get cores without destroying your gear:
- Universal Exchange: You can typically buy up to 10 cores per month using exchange currency.
- Regular Challenges: Beating the “Nightmare” difficulty in the 3-day challenge cycle rewards medals that can be exchanged for high-tier rewards, including Relic Cores and occasionally standard cores.
- Seasonal Events: Major events (like the Anniversary in August or Bridge events) often feature core choice chests as milestone rewards.
- Operations Zone: Reaching milestones of 50 and 100 emblems unlocks random S-chests, which can then be salvaged if you receive a piece you don’t need.
How to Use Eternal Core in Survivor.io
Once you have gathered enough materials, you will use them in a specific order to maximize your power growth.
Crafting the Twin Lance
The Twin Lance (Starforged Havoc) is the most powerful weapon in the game and should be every player’s first priority for spending cores. To craft the base version, you need:
- 50 Eternal Cores.
- 50 Void Cores.
- 2,000 Base Tech Materials.
Astral Forging (SS Gear Upgrades)
Unlike standard gear that follows a single path, SS items have a dual-path system: five levels on the Eternal (E) side and five on the Void (V) side.
- Eternal Forging: Requires Eternal Cores + Relic Cores + Yellow Lightchaser weapons.
- Void Forging: Requires Void Cores + Relic Cores + Yellow Void Power weapons.
Strategic Guide: How to Get More Void Core Survivor.io Efficiently
The biggest mistake a player can make is rushing into the SS tier by salvaging gear they actually need. Use these strategies to ensure you don’t stunt your progress.
The “Do Not Salvage” List
Never salvage the following items until you have finished their AF3 (Astral Forge 3) levels, as they remain “meta” and are often stronger than an un-upgraded SS item:
- Voidwaker Gloves and Voidwaker Emblem (Necklace).
- Eternal Suit (Armor).
- Voidwaker Treads (Boots).
Setting Your Wishlist
To get specific cores, you should adjust your S-grade Supply Crate wishlist. If you are aiming for the Twin Lance, split your wishlist 50/50 between Eternal and Void gear. Once you have enough cores for the base craft, switch your wishlist to Lightchasers and Void Powers, as these are required as “fodder” for the Astral Forge levels.
The Reversibility Rule
A crucial insight for resource management: Cosmic Casting (creating the base item) is permanent, but Astral Forging is reversible. If you realize you spent your Eternal Cores on the wrong upgrade path, you can downgrade the AF level to get your cores and fodder back.
Recommended Astral Forge Order
Because Relic Cores and S-cores are limited, follow this survivor io eternal core guide for the most efficient power spikes:
- Twin Lance E1 (Eternal Level 1): This is the most important upgrade in the game. It makes the weapon start at Level 3 in matches, drastically reducing the time it takes to reach its evolved form (Havoc Nova).
- Twin Lance V2 (Void Level 2): Provides a massive 20% damage amplification boost.
- SS Boots (Glacial Warboots) to E1V2: Provides a global damage multiplier.
- SS Belt (Stardust Sash) to E3: Unlocks a higher energy cap for more damage.
The Extreme Endgame: Xeno Transmute
If you are a veteran player who has already reached Eternal Level 4 and Void Level 4 (E4V4) on an SS item, you unlock the Xeno Transmute system. This is the ultimate “core sink.”
- Cost: Upgrading one item to the max Transmute level requires 60 Xeno Transmute Cores.
- Acquisition: You can exchange one Relic Core and 5,000 Gems for one Transmute Core in the Universal Exchange (limited to 6 times per month).
- Materials: This process also consumes significant amounts of regular Eternal and Void cores.
Summary Checklist for Getting Cores
| Goal | Requirements | Best Source |
|---|---|---|
| Craft Twin Lance | 50 Eternal, 50 Void Cores | Salvage unused S-gear / Monthly Universal Exchange |
| Unlock AF/Cast | 1 Red (Legendary) item | Normal game progression |
| Relic Cores | Event Milestones / Regular Challenges | Save Gems for major events / Nightmare challenge |
| Specific S-Fodder | Yellow LC or Yellow VP | Set wishlist in S-Supply Crates |
| Transmute Cores | 1 Relic Core + 5,000 Gems | Universal Exchange |
By following this survivor io eternal core guide, you can systematically dismantle your unused gear and capitalize on event rewards to build the strongest character possible. Remember: don’t rush. It is better to have a fully functional AF3 Void build than an un-forged SS build that leaves you vulnerable in high-level chapters. Stay patient, manage your salvages wisely, and the Starforged Havoc set will eventually be yours.