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Weapon · Large Sword

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Moonlighter 2 Aetherium Heart — Large Sword Guide

Aetherium Heart is a large sword in Moonlighter 2: The Endless Vault, added in Early Access. Attacks refill Sharpness and the Special consumes it; the Special deals +40% damage per Sharpness level.

Moonlighter 2 screenshot showing a colorful dungeon combat scene.

Moonlighter 2 Steam store screenshot. This image is used for identification and editorial context.

Special effect

Attacks refill Sharpness and the Special consumes it; the Special deals +40% damage per Sharpness level.

  • Class: Large Sword.
  • Class mechanic: Large Swords swing two wide slashes and an overhead slam. Every hit spends Sharpness; the Special — three rapid stabs — builds it back, and damage scales with the current Sharpness level.
  • Added: Early Access.

How to get

Andrei's Forge (Aeolia-tier recipe).

Upgrading a weapon raises the number in its effect text. Each tier costs gold plus a growing count of the weapon's material, and the Legendary tier exists even though its full cost is not published.

Best use

Repeatedly named the best weapon in the game by Early Access tier lists. Build Sharpness with normal hits, then dump a fully-charged Special for huge damage.

Upgrade tiers

TierGoldMaterials
Common2,0001–4 of the weapon's material
Uncommon5,0006 of the weapon's material
Rare20,0008 of the weapon's material
Epic50,00010 of the weapon's material
LegendaryNot fully publishedHighest material count; effect keeps scaling

Related Moonlighter 2 guides

All Moonlighter 2 weapons

Every melee aspect, gun and armor set by class.

Endless large sword aspect

The Version 1.0 Endless aspect for the large sword class.

Moonlighter 2 bosses

Region bosses and Boss Rush rewards that unlock several aspects.

Sources and verification

Fact sources

StatusSourceUsed forChecked
PlatformMoonlighter 2 Steam store pageValve / SteamApp id 2350790. Read September 3, 2026: the release field now shows Sep 2, 2026, the Early Access genre tag is gone, the listed genres are Action, Adventure and RPG, the platform is Windows, and the listing confirms Single-player, Steam Achievements, full controller support, Steam Cloud and Family Sharing.
OfficialMoonlighter 2 Steam news hubDigital Sun / 11 bit studiosFirst-party announcement feed used to track version changes, hotfixes and feature updates after the 1.0 launch.