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To level up heroes efficiently in Sea of Conquest, collect skill books from routine missions and quests, then spend them on a small group of heroes that fit the ships and roles you actually use. Keep advancing your Adventure Level as well: an older guide reports that it raises the hero level ceiling, but confirm that rule in your current game before planning around it. Hero levels and account progression are separate systems.
Level heroes and advance your account separately
Hero levels use skill books, which Pocket Gamer identifies as rewards from missions and quests. Adventurer Level, by contrast, rises through account tasks and unlocks missions and story chapters. The two tracks can support the same overall progression, but account level is not the same thing as a hero’s level. Pocket Gamer’s beginner guide explains this distinction.
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Use a low-waste leveling plan
- Clear routine missions and quests. Collect their available rewards before looking for less certain ways to obtain skill books; these are the sources specifically identified by Pocket Gamer.
- Choose a small core roster. Match heroes to the ship roles you use, such as First Mate or Gunner, instead of spreading scarce materials across every hero.
- Check whether the next upgrade is achievable. Consider a hero’s role, damage type, current star level, and the availability of the resources needed to advance. The Sea of Conquest Handbook, an independent fan guide updated in September 2026, recommends free-to-play players favor heroes they can finish developing rather than automatically chasing newer ones.
- Continue progressing Adventure Level. A March 2024 TalkAndroid guide reports that Adventure Level raises the maximum hero level and recommends using stamina to earn Adventure EXP. This is older secondary guidance, not a confirmed current cap rule, so check the live game before relying on it.
- Review event and shop rewards before spending. A July 2026 secondary guide suggests that missions, events, and shops may offer hero materials. Confirm the actual reward and cost in your game before committing resources.
Choose investments by role and finishability
There is no universal best hero to level without knowing your lineup and progression stage. Compare candidates using the factors below; an upgrade that improves a ship you rely on and that you can realistically complete is generally a safer use of limited materials than a speculative investment.
| What to compare | Why it matters |
|---|---|
| Ship role | Heroes specialize in roles, so prioritize those who suit the positions on ships you actually use. |
| Damage type | Check how the hero’s damage type fits the lineup and the job you need covered. |
| Current star level | Star level is one of the factors the current roster guide recommends considering when choosing an investment. |
| Resource availability | Favor upgrades for which you can obtain the required advancement resources, rather than leaving several heroes partway through development. |
Spend premium currency cautiously
Pocket Gamer notes that Emeralds can be used to obtain skill books “in a pinch.” Treat that as an optional fallback, not the default leveling method: the cited guide does not establish that spending Emeralds is the best value compared with saving them or earning routine rewards.
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What is not established about current leveling costs
The official Sea of Conquest site confirms the game and publisher context, but the official material reviewed does not provide a detailed current hero-leveling table. Exact XP requirements, level caps, material costs, and drop rates are therefore not established here. Avoid relying on a fixed XP schedule or a guaranteed farm route unless the current game client or official support material confirms it.
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