Legionbound Battle Mode Guide: Endurance Runs 2026

Updated 2026-10-22: Correction: an earlier version said Battle Mode has no Endbringer; the developer says he kills parties there and is only vulnerable in Adventure Mode. It also called the Tax Collector loop the easiest first synergy (Tax Collector needs an achievement unlock and none of its loop are starter heroes), said a Warrior and Knight chain gives seven synergy classes from seven heroes (it gives four from six), mentioned a leaderboard we couldn't find, and gave spell timings and death-recovery rules with no source. Those claims are gone, along with an outdated price and review count. The images are now official Steam trailer and demo screenshots.

Legionbound Battle Mode: quick answer

• Endurance runs on different maps; the skill tree applies in full
• Beat wave 25 on a map to unlock its hero (several heroes unlock this way)
• Wave 100: the Survivor achievement, and Endless mode unlocks
• The Endbringer kills parties in Battle Mode; he's beatable only in Adventure Mode
• No two starter heroes are partners; unlock one from the skill tree first

What Battle Mode is

Steam's description: "An Endurance run on different maps where the goal is simple: last as long as you can. Keep recruiting heroes during the run, keep them alive through items and discovering Synergy subclasses, and see how far your build can go before it finally snaps. Unlock maps and heroes along the way!"

Two things set it apart from Adventure Mode. First, your skill tree counts. A developer says the only nodes that affect Adventure Mode are starting party size and starting heroes, so Battle Mode is where every node you've bought does its job. Second, the Endbringer is not a fight you can win here. From the developer's Adventure Mode post: "This guy has been killing parties left and right in Battle mode... But here, he's finally vulnerable!"

The milestones that matter

Wave 25 on each map. Many heroes unlock from map achievements. Myzri's Hero Class Guide lists them, for example:

A player on the Steam forum summed it up: "Many of the unlocks are not on the skill tree. They come from clearing lvl 25 on a map." So a new map is worth a run even if you only plan to reach 25.

Wave 100. The Survivor achievement ("Clear Wave 100 for the first time") is held by 52.1% of players on Steam's global stats. Patch 1.1 made it the Endless key: "Endless mode can now be unlocked by reaching Wave 100 in any Battle Mode map."

Endless. Since Patch 1.05, "Endless mode now has 10 difficulty levels." The achievements go to wave 300 in Endless; only 5.6% of players have that one.

Image: LegionBound release trailer on Steam (Spicy Garlic Games). Bosses like the Copper Dragon show up between the regular waves.

Your first synergy: unlock a partner

The five starter heroes are Warrior, Wizard, Cleric, Rogue and Ranger, and none of them is another's partner. So your first synergy needs one more hero. Per the class guide:

• Warrior becomes Spellblade with a Sorcerer (skill tree node)
• Wizard becomes Magus with a Druid (skill tree node)
• Cleric becomes Mender with a Paladin (skill tree node)
• Rogue becomes Assassin with a Duelist (Deep Woods, wave 25)
• Ranger becomes Snapshot with an Artificer (Burning Forest, wave 25)

Our pick for a first run of skill gems: buy the Sorcerer node. The Warrior is a starter, and the Sorcerer then becomes Warlock once you add a Witch later, so it's the start of a longer chain in the Warrior group. The synergy guide has every pair.

Steam's global stats show where most players get: the Duelist achievement is held by 83.8%, the Tax Collector by 19.6%. The Tax Collector loop is a later project, not a first build.

Rows, targeting and pickups

You move heroes between a Back Row and a Front Row, as the demo screenshot below shows. One developer answer is worth knowing: "The position of the heroes in the row does not make them more or less likely to be targeted." Rows decide who's in front, not who gets picked.

The same reply covers drops: "Gold and items are automatically picked up. Manually picking up gold does give 5% more." And for spell-heavy parties: "There is a keystone that does increase ultimate charge speed."

Screenshot: LegionBound Demo Steam store page (Spicy Garlic Games). The Back Row and Front Row labels mark where heroes stand.

Skill gems: the reason to keep running

Every Battle Mode run feeds the skill tree. The developer says Skill Gem rate follows coin drops and that Endless's ten difficulty levels scale gems "even higher than 5 on Dead Stronghold". Our gold farming guide covers the economy, and the late-game layer of the tree is in the Endbringer builds guide.

Patch 1.1 also added more Idle Mode options, and Daily Runs have their own achievement (Explorer, "Clear Wave 100 in a Daily Run").

Step-by-step: a Battle Mode progression plan

1. Spend your first gems on a partner node. Sorcerer for the Warrior is our pick.

2. Take each new map to wave 25. That's where most hero unlocks come from.

3. Push one map to wave 100. It unlocks Endless and the Survivor achievement.

4. Farm gems on Endless. Raise the difficulty as the tree fills.

5. Take your build to Adventure Mode when you want to beat the Endbringer.

Our take

Battle Mode is the game's progression engine. The skill tree works in full, maps hand out heroes at wave 25, and wave 100 opens Endless. Treat early runs as unlock runs, build your first synergy around a skill tree partner, and save the Endbringer fight for Adventure Mode, where he can actually lose.

Frequently asked questions

What is Battle Mode? The endurance mode: last as long as you can on a map, unlocking maps and heroes along the way.

Is the Endbringer in Battle Mode? Yes, and he wins there; he's only vulnerable in Adventure Mode.

How do you unlock heroes? Skill tree nodes, and achievements for beating wave 25 on specific maps.

How do you unlock Endless? Reach wave 100 in any Battle Mode map.

What is the first synergy to build? Warrior plus a Sorcerer from the skill tree is our pick.

Related Reading

• LegionBound Adventure Mode Guide: the mode where the Endbringer can die.
• LegionBound Endbringer Guide: the final boss.
• LegionBound Synergy Guide: Launch 30 Classes: every partner pair.
• LegionBound Warrior Group: All 14 Classes: the biggest loop.
• LegionBound Barkeep Group: All 11 Classes: the Dexterity loop.
• LegionBound Tax Collector Group: All 4 Classes Loop: the four-class loop.
• LegionBound Gold Farming Guide: coins and skill gems.
• LegionBound Advanced Builds: Late-Game Class Chains: chains for long runs.
• LegionBound Ascension Guide: merging heroes.
• LegionBound Tier List 2026: our ranking of the launch 30.
• LegionBound complete guide hub: every LegionBound guide in one place.

References

• Legionbound on Steam: Battle Mode description, Release Trailer
• Legionbound Demo on Steam: demo screenshot used here
• What is Adventure mode?!: developer post on the Endbringer
• Developer answers thread: skill tree in Adventure Mode, row targeting, pickups
• Hero Class Guide: Myzri's Steam guide; starters, partners and unlocks
• Tax Collector unlock thread: player and developer on wave 25 unlocks
• LegionBound 1.1 - Volatile Elements: Endless unlock, Idle Mode options
• Patch 1.05: Endless difficulty levels
• LegionBound achievements: Survivor, Endless and Daily Run achievements