Weapon Fusion

Hades II mod allowing you to fuse any* 2 weapons and their aspects. Takes Attacks and Specials from different weapons and combines them into a single weapon.

Gameplay examples of what it looks like in action:

• Xinth plus Persephone
• Moros plus Xinth
• UI Test

Installation

Use r2modman by ebkr from Thunderstore or GitHub.

There's almost no way I could have tested every possible combo here :) so it is recommended to backup your save from %USERPROFILE%\Saved Games\Hades II\Profile*.sav in case there are issues.

Usage

Salute the silver pool or use the ImGui menu (default toggle keybind: INSERT). It's recommended to only use this if you atleast have every weapon unlocked. If you do not have every weapon unlocked, just don't fuse them :).

If the ImGui window seem unresponsive try disabling V-sync and any external frame limiters if enabled.

Fusion can only be performed in the Crossroads training grounds.

The primary aspect needs to be changed in the in-game UI before/after fusion if you're using ImGui.

To unfuse weapons using the in-game UI select the same weapon for both primary and secondary and it should change the fuse button to unfuse.

If it feels like the fusion didn't apply properly try starting a run/reloading the room.

If it still seems bugged would really appreciate a bug report :).

Some Limitations

• A weapon cannot be fused with another aspect of itself.
• Some aspects which didn't make sense to have just its special didn't make it in (Eos, Moros, Medea, Hel)
• [WIP] Momus is currently unavailable for the secondary weapon; however, having it as primary does properly work for fused omega specials

Issues and feedback

Report any issues or feedback here or on Discord.

Changelog

Unreleased

0.8.0 - 2026-06-18

• Implement Nyx Nightspawns for staff attack and special, torch attack, skull attack and dagger special
• Allow Nyx omega Boost to activate Valkyire form
• Fix attack Nightspawns for coat attacks during same weapon fusion

0.7.3 - 2026-06-16

• Minor Momus and Circe fixes for same weapon fusion
• Fix Exceptional Talent for Minor Aspect of Hel
• Fix Artemis not boosting Supay Attacks
• Fix Axe not consuming Artemis crit charges
• Fix Psychic Whirlwind breaking daggers omega special

0.7.2 - 2026-06-10

• Block fusion menu unless all weapons are unlocked

0.7.1 - 2026-06-08

• Minor compatibility patch for dx2_weapons, proper compatibility still not guaranteed but the mods should atleast load without issue now.
• Fix primary weapon selection allowing locked weapon selection

0.7.0 - 2026-06-05

• Add experimental support for same weapon fusion
• Add Axe and Staff minor aspects for AspectYoungMel

0.6.3 - 2026-06-04

• Remove hitstop from Morrigan's Blood Triad and Dagger Omega Attack
• Fix Nergal and Thanatos not working properly after the Anubis fix

0.6.2 - 2026-05-26

• Premium Service (Hephaeustus Legendary) will now also upgrade the Minor Aspects
• Fix ranged charged casts and cleave-casts not having the momus cast animation with Minor Aspect of Momus

0.6.1 - 2026-05-21

• Add Minor Aspect of Hel

0.5.1 - 2026-05-18

• Fix for testaments sometimes getting enabled in Dream Dives if random fusion is enabled

0.5.0 - 2026-05-17

• Add Minor Aspect of Momus, able to duplicate every omega attack
• Add proper support for Charon as primary aspect, all other weapons' omega specials trigger cleave-cast
• Add Minor Aspects of Melinoe for all weapons except skulls
• Fix Eos' duplicate skull omega specials not being created properly
• Fix Supay attack not auto firing when Melinoe puts the flames away to use another weapon
• Fix Anubis base attack not increasing stacks for Thanatos and Nergal
• Fix Minor Aspect of Artemis boosting regular attack speed for torches and skull
• Primary Anubis no longer increases Mana cost for fused omega specials
• Fix axe always having Psychic Whirlwind active for fused specials

0.4.2 - 2026-05-14

• Block Pan and Charon from appearing as primary aspect in random fusions
• Minor UI adjustments

0.4.1 - 2026-05-13

• Add some audio and visual flourishes to the menu
• Fix a crash in cases were no aspect is equipped for a weapon

0.4.0 - 2026-05-12

• Add ingame menu for weapon fusion, accessible by saluting the silver pool

0.3.0 - 2026-05-12

• Aspect of Eos' Daybreaker will now correctly duplicate all Specials
• Trick Knives now gets properly boosted by special boons
• Replace projectiles spawned by Trick Knives for axe, torch, staff and coat

0.2.2 - 2026-05-11

• Counter Barrage(Xinth) now correctly fires special rockets when in a fused state
• Current fusion status is always shown in the imgui window
• Fixed biome transition maps being disabled (oops)
• Imgui shouldn't allow same weapon fusion anymore (it already did nothing expect cause con-fusion)

0.2.1 - 2026-05-10

• Moros now doesn't destroy the special projectiles immediately
• Fix skulls and Shiva not detonating Moros flames
• Slightly reduce Artemis omega attack speed
• Artemis now also boosts staff omega attack speed

0.2.0 - 2026-05-09

• Adds the Argent Skull with Aspect of Persephone available as a secondary aspect
• Add option for random fusion every run
• Fix Shiva not boosting some omega attacks
• Fusing weapons now instantly swaps to the fused weapon, primary aspect still needs to be changed using the in-game UI
• Fusion now triggers a save
• Fix for SkyFall not unequipping properly in the Crossroads, when switching weapons

0.1.3 - 2026-05-08

• Fix crash due to shit code
• Minor aspects will be the same level as the source aspect

0.1.2 - 2026-05-08

• Better hammer compatibility for the secondary weapon
• Fix crash due to missing file

0.1.1 - 2026-05-07

• Fix charon missing it's cast damage mulitplier

0.1.0 - 2026-05-07

• First version of the mod!