Be The Final Boss Soul Generation Optimization: Earn Souls Faster

Souls are the currency that decides whether your minion line survives the next wave in Be The Final Boss. They summon new units, upgrade existing tanks, and unlock the elite Doomfist slot from the UPD2 patch. Most BOSSes treat souls as a "use them when you have them" resource, but the players who reach Wave 50 consistently treat them as a calculated income stream with a target number per wave. This soul generation optimization guide breaks down every source of souls in the game, the Economy skill tree math that multiplies them, and the wave-by-wave targets that keep your army at full Population without ever starving for summons.

The reason soul optimization matters more than coin optimization is that coin shortfalls can be solved by code redemptions or by waiting one more wave. Soul shortfalls collapse runs immediately — if you cannot afford the Doomfist summon at Wave 25, the boss enrage will eat your castle. The discipline is to treat every wave as a soul target, then engineer your skill tree, your minion composition, and your hero-kill priorities around hitting that target. The mechanics are simple; the consistency is what separates a beginner from a Wave 50 BOSS.

Every Soul Source in Be The Final Boss

Souls in Be The Final Boss come from four sources: hero kills, wave clear bonuses, event bonuses, and idle generation. Each source scales differently, and understanding the scale lets you pick the highest-yield activity for each wave range.

The most reliable source is hero kills. Every hero your minions defeat drops 1-3 souls depending on the hero tier. Melee heroes drop 1 soul, ranged heroes drop 2 souls, and elite heroes drop 3 souls. The variance is small, but the volume is large because a typical wave has 20-60 heroes. Wave clear bonuses are the second most reliable source — every cleared wave adds a flat 10-15 souls to your counter, regardless of hero kills.

Event bonuses are the multiplier on top. During the Shattered Storm event, hero kill soul drops are doubled, which lets you hit your soul target in roughly half the wave length. During the Cursed Moon event, wave clear bonuses are doubled, which gives a flat injection every cleared wave. Idle generation is the smallest source but the most consistent — you earn 1 soul every 30 seconds even when no heroes are on the field, which adds up to roughly 40 souls per inter-wave window.

Soul Income Per Wave Range

These numbers assume no skill tree multipliers. With Economy 3 online, multiply by 1.3. With Economy 4 plus Treasure Wave, multiply the treasure wave itself by 2.0.

Economy Branch and Soul Multipliers

The Economy branch of the skill tree is the single biggest soul-generation multiplier in Be The Final Boss, and most beginners undervalue it because the bonuses look small. Economy 1 adds +15% to wave rewards, Economy 2 adds +20%, and Economy 3 adds +25%. The bonuses stack additively, so a BOSS with Economy 1-3 online earns 60% more souls and coins from every wave. By Wave 15, the difference between a BOSS with Economy 3 and a BOSS without it is roughly 300 souls — enough to summon Doomfist twice over.

The fourth Economy node unlocks the Treasure Wave passive, which doubles wave rewards every tenth wave (Wave 10, 20, 30, etc.). During a Treasure Wave, a BOSS with Economy 3 online earns roughly 400 souls from a single wave, which is enough to fully upgrade three minions in one inter-wave window. Treasure Waves also compound with active events, so a Shattered Storm Treasure Wave can hit 800 souls in a single wave — the highest soul income moment in the game.

When to Invest in Economy

The right time to invest in Economy is Wave 8-12, after your first three Population nodes are online and your Castle Defense 1 node is funded. The reasoning is that Population gives you the army that converts souls into kills, Castle Defense gives you the HP to survive long enough to convert those kills, and Economy then accelerates the conversion rate. Investing in Economy before Population is a waste because you do not yet have the army to capitalize on the bonus.

The wrong time to invest in Economy is during a losing streak. If your castle HP is below 50% at Wave 18, every coin should go to Castle Defense instead, because the soul bonus only matters if your castle survives to spend the souls. The skill tree reset mechanic refunds 75% of spent coins, so a BOSS who invested in Economy during a losing streak can reset and reallocate without permanent loss — but it is better to plan the path correctly the first time. See the Souls vs Coins guide for the full spending priority breakdown.

Minion Composition and Soul Velocity

Your minion composition directly affects soul velocity, because different minion types generate different kill rates. A composition of three tanks and five ranged minions will clear a wave roughly 30% faster than a composition of five tanks and three ranged minions, which means more hero kills per second and more souls per wave. The optimal soul-velocity composition is two tanks and six ranged minions, which is the standard mid-game loadout for BOSSes chasing Wave 25 and beyond.

The exception is vertical chokepoint maps, where a single tank at the slope apex can intercept every hero with Doomfist's AOE pulse handling the burst damage. On these maps, the soul-velocity composition shifts to one tank, one Doomfist, and six ranged minions, which is even faster than the standard composition because every hero dies inside Doomfist's AOE radius.

Minion Upgrade Timing for Soul Generation

Upgrading a minion does not directly increase soul generation, but it indirectly affects soul velocity by increasing kill speed. The optimal upgrade timing is to upgrade your front tank first, then your secondary tank, then your highest-damage ranged minion. Upgrading in this order keeps your kill speed curve smooth, which keeps your soul income predictable.

The most common soul-generation mistake is upgrading too many minions too early. A BOSS who spends 100 souls on five different minion upgrades at Wave 5 has nothing left for the Wave 12 stun hero spike, when an extra tank summon would have held the line. The discipline is to concentrate upgrades in your first two tanks until Wave 12, then shift spending to your highest-damage ranged minion until Wave 18, then save everything for the Doomfist unlock at Wave 22.

Soul Farming Builds and Strategies

For BOSSes who want to maximize soul income specifically, three farming strategies consistently outperform the standard play. The first is the chokepoint camp, where you place your entire minion line at a single bridge chokepoint and let every hero funnel into your formation. The chokepoint camp maximizes kills per minute because no hero escapes your formation, which means no wasted DPS. The drawback is that the camp requires a bridge chokepoint map, which appears in roughly 60% of matchmaking queues.

The second strategy is the active event camp, where you queue into Shattered Storm or Cursed Moon events and spend the entire session on a vertical chokepoint map. The combination of the event multiplier and the slope-apex positioning lets you hit soul income rates of 300+ per wave by Wave 15, which is enough to summon Doomfist at the standard slot and still have 100 souls left over for emergency tank summons.

The third strategy is the 6-player server rotation, where you queue with a coordinated team that splits the map into three lanes, each defended by two BOSSes. The team composition multiplies soul income because every lane generates souls independently, and the shared minion types reduce wasted DPS on dead heroes. The drawback is that 6-player coordination requires a Discord group or a friend network, which not every BOSS has access to. Solo players should default to the chokepoint camp or the active event camp.

Soul Farming Pitfalls and Discipline Rules

Soul farming discipline is not glamorous, but it is the difference between BOSSes who reach Wave 50 and BOSSes who stall at Wave 30. The most common pitfalls are:

• Hoarding souls — sitting on 200+ souls while your minion line is at full Population starves the Economy passive

• Spreading upgrades — spending 100 souls on five different minion upgrades at Wave 5 instead of concentrating on two tanks

• Missing wave clear windows — pausing to admire the reward screen loses 20 souls per pause

• Ignoring event timing — playing Shattered Storm events without the chokepoint camp wastes the doubled soul drops

The discipline rules for soul farming are simple but strict:

1. Spend down to a 30-soul reserve before the next wave begins

2. Concentrate upgrades in the first two tanks until Wave 12

3. Plan next minion placement during the wave clear animation

4. Queue Shattered Storm events on vertical chokepoint maps when possible

5. Track weekly soul income to plan Doomfist affordability by Wave 22

Soul Generation Pitfalls to Avoid

The single biggest soul-generation pitfall is hoarding. A BOSS who sits on 200 souls at Wave 15 while their minion line is at full Population is leaving 30-50 souls per wave on the table, because idle souls generate more souls (via the Economy passive) only when they are spent on minions. The discipline is to spend down to a 30-soul reserve before the next wave begins, which keeps the idle generation active and the army at full strength.

The second pitfall is soul-starving the Doomfist summon. A BOSS who has unlocked the Elite Minion Slot but cannot afford the 120-soul Doomfist summon by Wave 22 is essentially locked out of the Wave 25 boss fight, because Doomfist is the single highest burst damage option in the game. The fix is to track your soul income weekly and plan your minion composition around the Doomfist affordability threshold. If you cannot afford Doomfist by Wave 22, refund the Elite Minion Slot and invest in Soul Discount instead.

The third pitfall is ignoring wave clear bonuses. Wave clear bonuses add a flat 10-15 souls per wave, which sounds small but compounds into 200-300 souls across a full Wave 1-25 run. A BOSS who pauses to admire the reward screen or who alt-tabs between waves loses the inter-wave idle generation window, which costs roughly 20 souls per pause. The discipline is to plan your next minion placement during the wave clear animation, then execute the placement the moment the next wave begins.

Frequently Asked Questions

How many souls should I have by Wave 10 in Be The Final Boss?

Target 100-150 souls by Wave 10, with 80 souls already spent on minion summons and upgrades. The 30-soul reserve handles unexpected stun hero spikes, and the cumulative spend reflects your Population cap progress. A BOSS below 80 souls by Wave 10 has either spent too aggressively or missed the Economy skill tree node.

What is the fastest way to farm souls in Be The Final Boss?

The fastest way to farm souls is the active event camp during a Shattered Storm event on a vertical chokepoint map. The combination of the doubled hero kill soul drops and the slope-apex AOE positioning lets you hit 300+ souls per wave by Wave 15. The 6-player server rotation is faster but requires team coordination.

Should I always spend souls on Doomfist in Be The Final Boss?

Spend souls on Doomfist only if you have unlocked the Elite Minion Slot skill tree node and your Population cap is at 8. Doomfist costs 120 souls to summon and 40 souls per upgrade, which is a meaningful commitment. If your Population is below 8, the slot is wasted because Doomfist will not stay on the field long enough to be worth the souls.

Does the Economy skill tree affect soul generation?

Yes. Economy 1-3 add +15%, +20%, and +25% to wave rewards, which includes both coin and soul payouts. Economy 4 unlocks the Treasure Wave passive, which doubles rewards every tenth wave. A BOSS with Economy 3-4 online earns roughly 60-100% more souls per wave than a BOSS without it.

How do I stop running out of souls mid-wave in Be The Final Boss?

Maintain a 30-soul reserve between waves and spend the rest on minion summons or upgrades. The reserve handles unexpected AOE hero spikes where you need an emergency tank summon. If you find yourself dipping below 30 souls regularly, reduce your minion upgrade spending and prioritize raw Population cap growth through the skill tree.