Mithril in Whiteout Survival is an advanced Hero Gear material used after a Mythic gear piece has reached level 100 and entered the Legendary, or red-gear, progression system.
However, reaching level 100 does not mean you can spend Mithril immediately. You must also meet the relevant Mastery Forging requirement, complete the initial Legendary ascension, and raise the red gear to its next milestone.
This guide explains how to use Mithril in Whiteout Survival, when the option becomes available, how much Mithril each upgrade requires, where to obtain it, and how to avoid wasting this limited resource.
Mithril is used to enhance Legendary Mythic Hero Gear at red-gear levels 20, 40, 60, 80, and 100. Before the first Mithril upgrade, the original Mythic gear must reach level 100 and Mastery Forging level 10, then be ascended to Legendary using two spare Mythic Hero Gear pieces.
What Is Mithril in Whiteout Survival?
Mithril is a rare material tied specifically to the later stages of Hero Gear progression. It is not used for buildings, Chief Gear, research, hero stars, or Exclusive Hero Gear.
Its main purpose is to unlock major milestone enhancements for Legendary Mythic Hero Gear. Players also commonly call this red Hero Gear or Legendary Hero Gear.
The official in-game spelling is Mithril. Searches using “Mythril” normally refer to the same item, but the version without the second “y” is the correct spelling.
When Can You Use Mithril in WOS?
You can only use Mithril after completing several Hero Gear requirements. Simply owning Mithril does not allow you to apply it to an ordinary gear piece.
Your selected gear must progress through the following stages:
- Upgrade a Mythic Hero Gear piece to level 100.
- Raise that gear piece to Mastery Forging level 10.
- Use two spare Mythic Hero Gear pieces to complete the initial Legendary ascension.
- Enhance the new red gear from Legendary level 1 to level 19.
- Raise its Mastery Forging level to 11.
- Spend 10 Mithril and three additional Mythic Hero Gear pieces to reach Legendary level 20.
Important clarification: The initial conversion from level 100 Mythic gear to red Legendary gear costs two Mythic Hero Gear pieces but no Mithril. Mithril is first consumed when upgrading the red gear from level 19 to level 20.
How to Use Mithril in Whiteout Survival
Once your gear meets the required level and Mastery Forging conditions, you can use Mithril directly from the Hero Gear interface.
- Open your Heroes menu.
- Select the hero currently wearing the gear you want to improve.
- Tap the relevant red Hero Gear piece.
- Open its enhancement or ascension screen.
- Check that both the gear level and Mastery Forging level meet the next milestone requirement.
- Confirm that you have enough Mithril and spare Mythic Hero Gear pieces.
- Preview the stat increase before confirming the enhancement.
The precise wording of the interface can vary with game updates or language settings. However, Mithril will only appear as a required material when the selected gear has reached a valid Legendary milestone.
Whiteout Survival Mithril Requirements
Legendary Hero Gear uses Mithril at intervals of 20 levels. The required amount increases at every milestone.
| Legendary Milestone | Level Before Upgrade | Required Mastery Forging | Mithril Cost | Mythic Gear Cost | Cumulative Mithril |
|---|---|---|---|---|---|
| Initial Legendary Ascension | Mythic Level 100 | Level 10 | 0 | 2 | 0 |
| Legendary Level 20 | Level 19 | Level 11 | 10 | 3 | 10 |
| Legendary Level 40 | Level 39 | Level 12 | 20 | 5 | 30 |
| Legendary Level 60 | Level 59 | Level 13 | 30 | 5 | 60 |
| Legendary Level 80 | Level 79 | Level 14 | 40 | 10 | 100 |
| Legendary Level 100 | Level 99 | Level 15 | 50 | 10 | 150 |
Upgrading one piece from level 100 Mythic gear through the final Legendary milestone requires a total of:
- 150 Mithril
- 35 spare Mythic Hero Gear pieces
- The Enhancement XP required for the levels between each milestone
- The materials needed to raise Mastery Forging from level 10 to level 15
The 35-piece total includes the two Mythic Hero Gear pieces used for the initial Legendary ascension.
Planning tip: Do not calculate your upgrade based on Mithril alone. A player can have enough Mithril for the next milestone but still be blocked by Mastery Forging materials, Enhancement XP, or spare Mythic Hero Gear.
Where to Get Mithril in Whiteout Survival
Mithril is generally obtained from advanced shops, competitive events, seasonal activities, and paid packs. Some sources may not appear until your state or account reaches the required progression stage.
Arena Shop
Mithril can become available through the Arena Shop after the relevant progression requirements are met. Check the shop when its stock refreshes and compare Mithril with any other high-priority items you still need.
Labyrinth Shop
The Labyrinth Shop is another recurring source. Because shop currency is limited, review your current Hero Gear bottlenecks before spending everything on lower-value materials.
Frostdragon Tyrant
Frostdragon-related content can provide Mithril through event rewards or associated progression. Participation requirements and reward tiers may depend on your state, alliance performance, and the current event version.
State of Power Preparation Phase
Mithril may be included in State of Power, commonly called SvS, during preparation-related rewards or objectives. The available tasks and reward thresholds can change, so confirm the current event panel before committing resources.
King of Icefield and Other Rotating Events
King of Icefield, Journey of Light, seasonal event shops, and other limited activities may offer Mithril during certain rotations. These sources should be treated as periodic opportunities rather than guaranteed permanent availability.
In-Game Packs
Some paid packs include Mithril. Before buying one, compare the amount of Mithril with the other included materials and verify that your selected Hero Gear is close enough to its next milestone to benefit from the purchase.
Availability reminder: Event schedules, store inventory, purchase limits, and rewards may vary by state age, account progression, event rotation, and game updates. Always check the current in-game shop or event panel.
Best Way to Spend Mithril
Mithril is too limited to distribute without a plan. The most effective approach is usually to strengthen gear that supports your primary combat march rather than upgrading every hero equally.
Prioritize Heroes You Use Regularly
Start with a hero who has a stable place in your main Arena, rally, garrison, or competitive march. Avoid investing heavily in a hero you expect to replace when a newer generation becomes available.
Choose the Gear Effect, Not Just the Hero
Preview the milestone bonus before spending Mithril. Different gear slots improve different attributes, so the strongest choice depends on the hero’s troop type and role.
- Infantry: Survivability-focused upgrades are often valuable because Infantry normally absorbs the most incoming damage.
- Marksmen: Offensive upgrades can be useful when Marksmen provide a large share of your march damage.
- Lancers: Choose between offensive and defensive improvements based on your lineup, available heroes, and combat reports.
These are general priorities rather than fixed rules. Your best upgrade can change depending on your hero generation, march composition, rally role, and whether you focus on Arena, open-field combat, garrison defense, or boss events.
Reach Useful Milestones Before Spreading Resources
Taking one important gear piece to a meaningful milestone will often have more impact than leaving several pieces just below their next Mithril enhancement.
Before starting a second Legendary gear project, calculate whether you can finish the first piece’s next milestone without delaying your main march.
Mithril Strategy for Different Players
Free-to-Play Players
Free-to-play players should collect recurring shop Mithril, complete accessible event objectives, and save until the correct gear piece reaches its milestone. Avoid using shop currency impulsively when Mithril is one of your long-term bottlenecks.
It is usually better to build one dependable Legendary gear piece gradually than to open several expensive projects that all remain unfinished.
Low Spenders
Low spenders should treat paid Mithril as a way to close a small milestone gap rather than as the only source of progression. A pack offers less immediate value when you still lack the Mastery Forging level or spare Mythic gear needed to use the Mithril.
Competitive Players
Competitive rally leaders and garrison-focused players can justify deeper investment, but upgrades should still follow a planned main-march priority. Review battle reports and coordinate with alliance leadership before committing a large Mithril stockpile to a specialized build.
Evaluating Advanced Account Progression
Mithril progression becomes especially relevant when comparing accounts in established states. Players reviewing a wos account for sale should check the state number, Furnace or Fire Crystal level, transfer eligibility, main heroes, Legendary Hero Gear progress, unused Mithril, Chief Gear, account binding, and security status. Mithril alone does not determine whether an account is appropriately developed or suitable for a particular state.
Common Mithril Mistakes to Avoid
- Expecting to use Mithril at ordinary Mythic level 100: You must complete Mastery Forging level 10 and the initial Legendary ascension first.
- Forgetting the spare Mythic gear cost: Every milestone requires Mythic Hero Gear in addition to Mithril.
- Ignoring Mastery Forging: Mithril cannot bypass the required Mastery Forging level.
- Upgrading a temporary hero: Consider whether the hero will remain in your main march before making a major investment.
- Spreading Mithril across too many projects: Several incomplete gear pieces may delay your most valuable milestone.
- Buying Mithril before checking other bottlenecks: Enhancement XP or Mastery materials may prevent you from using it.
- Sacrificing equipped gear accidentally: Verify which spare Mythic pieces are selected as upgrade materials before confirming.
- Assuming every event has identical rewards: Check the current event panel because reward structures and availability can change.
FAQ
What is Mithril used for in Whiteout Survival?
Mithril is used to enhance Legendary Mythic Hero Gear at red-gear levels 20, 40, 60, 80, and 100. It is not used for Chief Gear, buildings, research, or ordinary Hero Gear upgrades.
When do you use Mithril in WOS?
You first use Mithril when a Legendary Hero Gear piece reaches level 19 and Mastery Forging level 11. Upgrading that gear to level 20 requires 10 Mithril and three spare Mythic Hero Gear pieces.
Why can’t I use my Mithril?
Your gear may not have reached level 100, Mastery Forging level 10, or its initial Legendary ascension. If the gear is already red, check whether both its regular level and Mastery Forging level meet the next enhancement requirement.
Does turning level 100 Mythic gear red require Mithril?
No. The initial Legendary ascension requires level 100 Mythic gear, Mastery Forging level 10, and two spare Mythic Hero Gear pieces. Mithril is first required for the following level 20 milestone.
How much Mithril is needed to max one Legendary Hero Gear piece?
You need 150 Mithril to complete all five Mithril milestones on one gear piece. You will also need 35 spare Mythic Hero Gear pieces in total, including the two pieces used during the initial Legendary ascension.
How do free-to-play players get Mithril?
Free-to-play sources can include the Arena Shop, Labyrinth Shop, Frostdragon Tyrant, State of Power preparation rewards, and rotating seasonal events. Exact availability depends on state progression and the current event schedule.
Which Hero Gear should I upgrade with Mithril first?
Prioritize a gear piece worn by a long-term hero in your main march. Infantry players often benefit from survivability upgrades, while Marksman and Lancer damage dealers may gain more from offensive attributes. Always preview the milestone bonus before confirming.
Can Mithril be traded between players?
No. Mithril is an account-bound progression material and cannot be transferred directly to another player.
Conclusion
Understanding how to use Mithril in Whiteout Survival starts with recognizing that it belongs to the Legendary Hero Gear system, not the normal level 1–100 Mythic upgrade process.
Before spending it, raise your Mythic gear to level 100, complete Mastery Forging level 10, and perform the initial Legendary ascension. From there, plan for Mithril gates at levels 20, 40, 60, 80, and 100, with increasingly expensive material requirements.
The safest strategy is to focus on a long-term hero in your main march, preview each milestone bonus, and confirm that you also have enough Mastery materials, Enhancement XP, and spare Mythic Hero Gear. Careful planning prevents valuable Mithril from being locked into a weak or unfinished project.
For more Hero Gear advice, resource planning, event strategies, and progression tips, explore our collection of Whiteout Survival guides.
