Helios is the Tier 11 troop family in Whiteout Survival, comprising three units that scale your standard troop trinity into the late game: Helios Infantry, Helios Lancer, and Helios Marksman. They are unlocked through "Ardent" research in the War Academy — a separate research building from the Research Center, gated to server age rather than personal progression.

For roughly eighteen months after their introduction, Helios troops were positioned as the apex of the troop tree. That changed on 27 April 2026 with the launch of T12 Exalted troops. Helios is no longer the ceiling, but it has become something arguably more important: the mechanical prerequisite for everything that comes next. You cannot begin T12 Flame Tech research until you have unlocked at least one Helios T11 troop type. For full details on the next tier, see our T12 Exalted Troops Guide. If you intend to keep pace with your server's progression, Helios is not optional — it is the gateway.

This guide covers what Helios unlocks require, what they cost, which type to prioritize, how to source the bottleneck currency, and what realistic timelines look like across F2P, light-spend, and committed-spend profiles.

Part of the Elite Progression Series:

Fire Crystal Furnace Guide: The prerequisite path to FC5.

How to Increase Power Fast: Where T11 fits in your total power score.

Troop Healing Guide: Why healing research is mandatory before training T11.

The three Helios types at a glance

Type	Role	Best at
Helios Infantry	Frontline tank, garrison defender	Soaking damage in rallies and SvS garrisons; survivability-first kit
Helios Lancer	Anti-Marksman counter, niche specialist	Mid-line role with balanced stats; usually selected for specific alliance counters
Helios Marksman	Damage dealer, rally caller, PvE specialist	Bear Hunt, damage-output events, leading rallies as the primary striker

Within each Helios type, individual troops scale further through Fire Crystal levels FC0 to FC10, with stat boosts applied at each Furnace/troop-camp FC tier. The choice you make at Helios unlock determines which branch of your late-game power tree you are investing in for months of subsequent FC progression.

What you need to unlock Helios

The Helios prerequisite stack has four gates. All four must be cleared before the capstone unlock can be researched in any branch.

1. Server age — approximately Day 220. The War Academy is server-gated, not player-gated. Individual progress does not accelerate this; the building appears on the server when state age clears the threshold. The standard figure quoted across guides is Day 220, though some sources give Day 230 and server activity can shift the actual unlock by one to three weeks in either direction. Plan for "around Day 220 to 230" rather than a fixed date.

2. Generation 4 heroes available. The War Academy unlocks roughly 30 to 40 days after Gen 4 heroes arrive on the server (Gen 4 itself arrives around Day 190). If your server has Gen 4 but no War Academy yet, you are in the window.

3. Furnace at Fire Crystal 5 (FC5). The Helios capstone research node lists Furnace FC5 as a hard prerequisite. You cannot complete the unlock without having reached this Furnace tier first. See our Fire Crystal Furnace Guide for details on reaching this level.

4. War Academy at FC5. The building itself must be leveled to its own FC5 tier before the capstone node becomes researchable. This is a separate, parallel upgrade track to the Furnace and consumes its own Fire Crystals.

The two FC5 requirements are the biggest practical blocker for most players. Both buildings consume Fire Crystals at progression, and Fire Crystals are also the source currency for the daily exchange into Fire Crystal Shards. The currency split — Fire Crystals for buildings, Fire Crystal Shards for research — sits at the center of every pacing decision you will make from here onward.

The research path

Helios research is structured as three independent branches in the War Academy's Ardent tree, one per troop type. Each branch has identical shape, with troop-specific node names.

Branch structure (applies to all three trees)

Node	Levels	Purpose
Flame Squad	5	Deployment capacity (+200 per level; +1,000 total per branch)
Health node	8	Troop-type health scaling
Lethality node	8	Troop-type lethality scaling
Attack node	12	Troop-type attack scaling
Defense node	12	Troop-type defense scaling
Flame Legion	12	Rally capacity scaling
Capstone	1	Unlocks T11 troop + simultaneous Attack/Defense/Health/Lethality/Squad Cap/Rally Cap bonuses

Branch-specific node names

Branch	Health	Lethality	Attack	Defense
Helios Infantry	Flame Shield	Flame Strike	Flame Tomahawk	Flame Protection
Helios Lancer	Blazing Armor	Blazing Charge	Blazing Lance	Blazing Guardian
Helios Marksman	Crystal Armor	Crystal Vision	Crystal Arrow	Crystal Protection

The Flame Squad and Flame Legion nodes share names across all three branches but level independently within each tree — you research them three times if you intend to complete all three branches.

The capstone node ("Helios Infantry", "Helios Lancer", or "Helios Marksman") is what actually unlocks T11 training in the corresponding camp. It also delivers a single large stat package — every major combat stat plus squad and rally capacity — in one research action. There is no partial Helios unlock; you either complete the capstone or you do not have T11 in that camp.

The cost in numbers

Per-Helios-type total (one full branch)

Resource	Total
Fire Crystal Shards	13,421
Meat	246,180,000
Wood	246,180,000
Coal	49,116,000
Iron	12,196,000
Steel	3,974,000
Base research time (no speedups)	~271 days
Research time with ~70% research-speed bonus	~159 days

These are the totals to unlock one Helios troop type from scratch, including all prerequisite techs and the capstone. Unlocking all three Helios types triples every figure above. With a fully kitted research-speed setup — VIP, alliance research, Zinman, state buffs — the per-tree time drops to roughly 159 days. Without those buffs, expect closer to nine months per tree.

Capstone node detail

The capstone alone — "Helios [Type], Lv. 1" — accounts for a sizeable share of the branch cost.

Field	Value
Prerequisites (Infantry)	War Academy FC5, Flame Tomahawk 12, Flame Protection 12, Flame Legion 12
Prerequisites (Lancer)	War Academy FC5, Blazing Lance 12, Blazing Guardian 12, Flame Legion 12
Prerequisites (Marksman)	War Academy FC5, Crystal Arrow 12, Crystal Protection 12, Flame Legion 12
Meat / Wood	85,000,000 each
Coal	17,000,000
Iron	4,200,000
Steel	1,000,000
Fire Crystal Shards	2,236
Research time	91d 08h 15m
Power gained	8,000,000
Effect	Unlocks T11 + bonuses to Attack, Defense, Health, Lethality, Squad Capacity, Rally Capacity

The capstone represents roughly 17% of the branch's Fire Crystal Shard cost and about a third of the base research time. The remaining cost is distributed across the prerequisite levels — meaning before you reach the capstone, you have already spent over 11,000 Shards on the lead-up.

T10 vs T11 base stat delta (FC0)

Stat	Infantry T10 → T11	Lancer T10 → T11	Marksman T10 → T11
Power	66 → 80 (+21%)	66 → 80 (+21%)	66 → 80 (+21%)
Defense	13 → 15 (+15%)	11 → 13 (+18%)	10 → 12 (+20%)
Lethality	10 → 12 (+20%)	14 → 16 (+14%)	15 → 17 (+13%)
Attack	10 → 12 (+20%)	13 → 15 (+15%)	14 → 16 (+14%)
Health	15 → 17 (+13%)	11 → 13 (+18%)	10 → 12 (+20%)

Power increases uniformly by +21% across all three troop types — this is the figure that drives the visible battle-power jump after unlock. Individual combat stats vary between +13% and +20%, with the largest gains concentrated on each troop's secondary stats rather than its primary role stat. Helios is not a uniform "+25% damage" upgrade; it is a moderate stat lift across the board, with the real strategic value coming from the unlocked FC0 → FC10 enhancement ceiling that follows. Load and movement speed do not change at T11. The upgrade is purely combat-statistical.

Which Helios to unlock first

You will almost certainly only finish one Helios branch in the first six to nine months after War Academy unlock. The choice of which branch to prioritize encodes your alliance role.

Decision framework

Pick Helios Infantry first if:

You play as a garrison defender or rally tank
Your alliance role is "soak damage in SvS"
You are F2P or light-spend and want the lowest-risk first pick
You expect to be the target of rallies more often than you call them

Pick Helios Marksman first if:

You are a primary damage dealer or rally caller
You prioritize Bear Hunt or other PvE damage events (Bear Hunt damage is overwhelmingly Marksman-driven)
You spend enough to keep Marksmen healed through PvP attrition
Your alliance has a clear strike-team role for you

Pick Helios Lancer first only if:

Your alliance has assigned you a specific anti-Marksman counter role
You already have strong T10 Infantry and Marksman composition
This is your third Helios unlock, not your first

The community default sequencing is Infantry → Marksman → Lancer. The reasoning is that Infantry first protects whatever army composition you have, Marksman second adds offensive ceiling once your defensive base is established, and Lancer last fills a niche most players do not need urgently. This sequencing is a recommendation, not a rule — a Marksman-focused damage dealer who never garrisons will get more value out of Marksman first.

Should you start Helios now, or finish maxing T10?

A common pacing question: with limited Fire Crystals, do you push Helios research, or fully FC-enhance your existing T10 army first?

The community heuristic — and it is a heuristic, not a hard calculation — is that fully upgrading T10 troops to FC8 across all three types costs roughly the same in Fire Crystals as unlocking one Helios type plus its associated training and healing discount research. So the trade is approximately:

Helios first: higher per-troop ceiling, larger Power gain on paper, requires aggressive healing infrastructure to sustain.
FC8 T10 first: broader and more balanced army strength, cheaper to heal, smaller individual troop power but stronger collective base.

The right answer depends on whether you have the infirmary capacity, healing speedups, and healing-cost discount research to keep T11s alive through SvS attrition. If your healing economy is fragile, max T10 first and start Helios when you can sustain T11 losses. If your healing economy is solid and you have a clear role, Helios is the better long-term investment.

Fire Crystal Shards — how to actually get them

Fire Crystal Shards are the primary bottleneck currency for Helios. Every Helios research node consumes them; nothing else in the game does. There are four supply lines.

1. Daily steel exchange. Approximately 50,000 steel converts to 1 Fire Crystal Shard, with a daily cap of around 20 exchanges. This sets a maximum of roughly 20 Shards per day from steel — assuming you have a steady steel income to feed it, which most established players do. Over a 271-day base research window, steel exchange alone accounts for about 5,400 Shards — a meaningful but insufficient share of the 13,421 needed per branch.

2. Daily Fire Crystal exchange. Approximately 10 Fire Crystals convert to 13 Shards, with a daily cap of around 200 exchanges. The theoretical maximum here is about 2,600 Shards per day — but this assumes you have 2,000 Fire Crystals to burn daily, which is wildly unrealistic for any non-spending player. Treat this exchange as supplementary, not as a primary daily income stream.

3. Packs and recharge events. Direct purchase of Fire Crystal Shards through in-game packs is the spender's main acceleration lever. Pack rates vary considerably between events; saving Shard purchases for high-value pack windows is standard practice.

4. Events, exploration, and intel rewards. Variable but consistent across active play — typically a handful to a few dozen Shards per event cycle.

The Fire Crystal vs Fire Crystal Shard trap

The most common pacing mistake at this point in the game is over-converting Fire Crystals to Shards before the Furnace and War Academy are at FC5. The currency split exists for a reason: Fire Crystals upgrade buildings, Shards drive research. Converting too many Fire Crystals into Shards early can leave you unable to push Furnace or War Academy to FC5 — which means even if you stockpile 13,421 Shards, you cannot finish the capstone because the prerequisite buildings are not at the required tier.

The practical rule: Keep your Fire Crystal balance high enough to clear the next Furnace and War Academy upgrade in your queue before you spend FC on the Shard exchange. Once both buildings are at FC5, then convert aggressively.

F2P vs light spender vs whale paths

F2P pathing

A committed F2P player can unlock Helios Infantry within roughly a year of War Academy unlock with disciplined daily exchanges and consistent event participation. The path is real but slow. Key tactics:

Flame Squad first across all three branches. The deployment capacity boost is cheap per Shard (roughly 258 Shards per tree for all 5 levels) and benefits your entire army regardless of which Helios type you eventually unlock. This is the universal first investment — about 775 Shards total across all three trees buys you +3,000 deployment capacity that applies to every march from now onward.
Commit to one branch and stop opening the others. Past Flame Squad, do not split Shards across branches. Pick one (almost certainly Infantry) and feed it exclusively.
Steel exchange every day, without exception. Twenty Shards per day compounds — missing days has a disproportionate cost over a multi-month research window.
Research healing and training cost discounts before mass-training T11. Helios troops cost meaningfully more to train and heal than T10s. Without the discount nodes, a single bad SvS can wipe out months of stockpiled resources.
Do not attempt all three Helios unlocks as F2P. It is mathematically achievable in theory and operationally unrealistic in practice. Plan around one Helios type plus partial progress on a second.

Light spender pathing

A light spender can reasonably target Helios Infantry within four to six months of War Academy unlock, with a second branch starting to open shortly after. Tactical adjustments over F2P:

Supplement steel exchange with selective Fire Crystal Shard packs during high-value pack windows.
Maintain Fire Crystal stockpile for building progression — pack purchases should accelerate Shards, not replace Fire Crystals.
Begin the second branch's Flame Squad and prerequisite chain once the first capstone is researched, even if you are not yet able to finish the second capstone.

Committed spender / whale pathing

With heavy spend, the bottleneck shifts from Shard income to research speedup availability. Multiple branches can run in parallel if you accept parallel speed-bonus stacks. Considerations:

Refined Fire Crystal packs (introduced alongside the T12 launch) extend the spend lever, but Refined Fire Crystals are gated to T12 Exalted research, not Helios — do not confuse the two currencies.
Speedup events become the actual rate-limiter; banking speedups for SvS prep cycles and major research pushes is standard whale routine.
All three Helios branches in parallel is achievable but expensive — most committed spenders still run a sequential primary branch with partial parallel work on the others.

Common mistakes to avoid

Converting T10 to T11 before researching the healing discount. T11 healing costs without the discount node are punishing. Research the healing discount inside your unlocked branch before you mass-train T11s. The discount node is the difference between sustaining T11 attrition and bleeding resources every SvS.

Skipping Flame Squad. The +200 deployment capacity per level is the highest stat-per-Shard return in the entire Ardent tree, and it applies to every troop type you field. Research all five levels in all three branches before committing Shards to any other early node.

Trying to unlock all three Helios types at once. Fire Crystal Shard income, even for spenders, struggles to support parallel progression. Picking one branch and finishing it is faster in clock time than partial work on all three.

Treating Fire Crystals and Fire Crystal Shards as the same currency. They are not. The exchange is one-directional (FC → Shards), capped, and consuming too much of your FC stockpile early starves your building progression.

Assuming Furnace FC5 alone unlocks Helios. It does not. Furnace FC5 is necessary but not sufficient. The War Academy itself must also reach FC5, and the server must have aged into War Academy availability. A FC5 player on a young server still cannot research Helios.

Waiting for "the right moment" to start. The base research time is 271 days per branch. There is no shortcut window — every day not spent on daily steel exchange is a day permanently lost. Start the moment the War Academy is buildable, even if you are not yet ready to push the capstone.

Believing "Helios is the strongest tier." Until 27 April 2026 this was true. T12 Exalted now exists. Any guide or community post still framing Helios as the apex is out of date.

What comes after Helios — T12 Exalted

T12 Exalted troops launched 27 April 2026. The prerequisites are steep:

State age threshold (server-gated, similar to how War Academy was gated).
Generation 10 heroes available (Gen 10 arrives around Day 800 of state age).
At least one Helios T11 troop type already unlocked.
Flame Tech research begun in the War Academy.

The third bullet is what reframes Helios's strategic role. Before T12, unlocking Helios was a long-term power investment; after T12, it is the gating step that determines whether you can begin Flame Tech and Exalted research at all. A player who delays Helios indefinitely will find themselves locked out of T12 progression on a server that has aged into it.

The new bottleneck currency for T12 is Refined Fire Crystals, a separate material from both Fire Crystals and Fire Crystal Shards. Refined Fire Crystals do not appear in Helios research and should not be stockpiled for it.

The key takeaway for Helios planning is that the value of unlocking your first Helios type now extends well beyond the T11 troops themselves — it is the entry credential for an entire additional tier of late-game progression.

Quick-reference summary

Item	Value
Tier	T11
Family name	Helios
Troop types	Infantry, Lancer, Marksman
Unlock building	War Academy
Server unlock	~Day 220–230
Building prerequisites	Furnace FC5, War Academy FC5
Hero prerequisite	Generation 4 heroes available
Research currency	Fire Crystal Shards
Per-branch cost	13,421 Shards + ~3.97M Steel + raw resources
Per-branch base time	~271 days
Per-branch time (~70% bonus)	~159 days
Capstone Power gain	8,000,000
T10 → T11 Power increase	+21% uniform
Daily steel→Shard income (cap)	~20 Shards
Recommended first branch	Infantry (community default)
Universal first investment	Flame Squad (all 3 trees)
Required for T12 Exalted?	Yes — at least one Helios branch unlocked

Related Handbook Guides:

T11 Helios Troops Guide: How to Unlock & Prioritize [2026]