Upgrading every Legendary hero you unlock in Heroes of History: Epic Empire creates severe resource scarcity and stalls account growth. To maintain continuous progress in both campaign encounters and arena battles, save your gold, experience scrolls, and shards for Legendary units that offer long-term utility across multiple game modes.
Spread-thin resources leave your team underpowered for late-game content. Your immediate goal should be building a lean core squad of high-utility units before spending materials on situational characters.
Evaluating Hero Utility vs. Niche Roles
Not all Legendary heroes scale equally into endgame content. Some characters rely on flashy single-target damage or narrow mechanics that lower-rarity units can easily duplicate or counter. Focus your heavy investments on heroes that serve as squad enablers or reliable area controllers.
| Hero Trait | Priority Investment | Low-Priority / Niche |
|---|---|---|
| Primary Function | Team-wide utility, energy generation, area crowd control | Single-scenario damage, highly specific counters |
| Squad Impact | Amplifies team performance through buffs or debuffs | Acts independently without boosting teammates |
| Power Scaling | High impact at base level or accessible power spikes | Requires excessive duplicate shards to become viable |
| Roster Role | Core staple for main PvE and PvP teams | Bench unit used only for isolated campaign stages |
Before promoting a hero, evaluate whether their kit offers a unique function your squad currently lacks. If a character only serves as a slight variation of a hero you already built, treat them as a low priority.
Core Rules for Managing Upgrade Materials
Because gold, experience scrolls, and duplicate shards are strictly finite, treat every level increase and rank promotion as a deliberate milestone investment.
- Wait for Full Potency: Hold onto your currency until you accumulate enough materials to push a unit to a major functional breakpoint. Partial upgrades consume stock without providing immediate progress.
- Prioritize Utility Over Raw Output: If deciding between a pure single-target damage dealer and a support or crowd-control hero, upgrade the utility unit first. Controlling encounters and keeping your squad alive yields more consistent clears.
- Maintain Material Reserves: Always keep a reserve of gold and experience scrolls ready. When you pull a top-tier Legendary unit that fundamentally improves your squad engine, you can max them out immediately.
- Avoid Immediate Release Upgrades: Wait for practical usage data before spending materials on newly released heroes to ensure their kit provides long-term value.
Timing Your Hero Promotions
To get maximum efficiency from your investments, tie your character upgrades directly to operational milestones:
- Clear Campaign Roadblocks: Keep heroes at their current level until you hit a specific wall in campaign progression. Identify the exact tactical gap causing the fail state, then upgrade the character that directly addresses that obstacle.
- Align with Upgrade Events: Save major rank promotions and level pushes for active events that offer extra rewards for spending leveling materials. Upgrading during these windows grants bonus resources that offset your spending.
- Refine Team Synergy: Ensure your upgraded unit active skills line up with your squad's primary strategy, such as combining defensive buffs with energy generators to ensure high uptime on primary ultimate abilities.
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Emily Johnson
Emily writes practical mobile strategy guides with a focus on resource planning, base progression, and the early decisions that shape a long-term account.
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70 players commented on this guide.
This helped me understand resources much better.
This guide answered the exact question I had.
I wish I had read this before upgrading the wrong thing.
This saved me time in the early game.