Haldor Expansion

Current version: 1.2.2

Haldor Expansion is a Valheim mod for BepInEx + Jotunn that expands Haldor's trading and adds unique risk-reward equipment with custom combat mechanics.

The mod is designed for multiplayer and dedicated servers, supports English and Russian localization, and keeps shop prices and progression settings synchronized from the server.

What's new in 1.2.0

Version 1.2.0 adds three major items built around new survival and archer playstyles:

• Hel's Oath — a high-risk bow centered around sacrificing health for stamina, building Hel's Touch, and unleashing Hel's Embrace;
• Pelt of Helheim — a dark archer cloak that completes the Fenris + Hel's Oath setup and grants Very Resistant to Pierce while the full synergy is active;
• Thread of the Norns — a one-use trinket that breaks to prevent lethal damage and briefly protects the wearer afterward.

The update also expands custom visuals, embedded icons, multiplayer handling, and item-specific mechanics.

Features

• unique combat items sold by Haldor;
• configurable prices for all custom HaldorExpansion items;
• configurable world progression requirements for shop items;
• additional resources and crafting materials sold by Haldor;
• configurable trophy sell prices;
• configurable sell prices for SurtlingCore, BlackCore, and MoltenCore;
• server-synchronized shop prices and progression requirements;
• trophy selling, including Deep North trophies;
• custom active abilities and build-specific item synergies;
• risk-reward armor, cloaks, bows, crossbows, trinkets, and cestus;
• embedded item icons — no separate PNG files are required;
• English and Russian localization;
• multiplayer / dedicated server support via NetworkCompatibility(EveryoneMustHaveMod, Minor).

Unique items sold by Haldor

The prices below are the default values. Shop prices can be changed in the configuration and are synchronized from the server in multiplayer.

Item	Price	Description
Hel's Oath	2500	High-risk bow built around stamina investment, Hel's Touch and Hel's Embrace.
Pelt of Helheim	2500	Archer cloak that grants Very Resistant to Pierce during the full Fenris / Hel's Oath synergy.
Thread of the Norns	6666	One-use trinket that breaks instead of allowing a lethal hit to kill its wearer.
Bone Crushers	2500	Cestus weapon with a custom active ability, protective barrier and shockwave.
Cuirass of Silent Reckoning	4000	Armor that delays part of dangerous incoming damage.
Cloak of the Wounded Beast	2500	Risky regeneration cloak that becomes stronger at low health.
Cloak of Burned Resolve	2500	Cloak that redirects part of incoming damage into stamina loss.
Corrupted Brisingamen	1600	Accessory that increases maximum carry weight.
Crossbow of the Shadow Hunt	2500	Heavy crossbow for powerful opening shots.
Pit King's Cuirass	4000	Cestus-focused armor for aggressive close combat.

Unique item mechanics

Hel's Oath

A bow built around a glass-cannon stamina playstyle.

Hel's Sacrifice

While Hel's Oath is equipped:

• 50% of maximum health is converted into maximum stamina;
• grants +20 Bows skill;
• the bow favors extreme stamina investment over safe health stacking.

Fenris — Hel's Touch

Wearing the full Fenris set allows bow damage from Hel's Oath to awaken Hel's Touch.

• builds up to five stages;
• each stage improves movement speed and reduces stamina costs;
• at Touch V the total bonus reaches +25% movement speed and -20% stamina cost for all actions;
• taking a combat hit removes one stage;
• removing Hel's Oath or breaking the full Fenris set disables the bonuses immediately;
• stored Touch stages survive for a short grace period, then decay one by one if the required loadout is not restored.

Hel's Embrace

Bow damage charges Hel's Embrace. When the charge reaches 100%, the ability is ready to use.

• press the middle mouse button (Mouse2) to activate Hel's Embrace;
• the next arrow fired becomes empowered;
• the activation key can be changed in the configuration;
• the empowered arrow deals increased direct damage;
• the impact creates a large explosion with 80% Lightning / 20% Frost damage;
• explosion damage does not fall off with distance inside its radius;
• damage scales heavily with stamina investment and the glass-cannon health/stamina ratio;
• the lower maximum health and the higher maximum stamina, the stronger Hel's Embrace becomes;
• activating Hel's Embrace at Hel's Touch V greatly increases its splash damage.

With the full Fenris set, Hel's Touch creates a tactical choice: you can maintain Hel's Touch V for its full passive bonuses, or unleash it through Hel's Embrace for a much stronger burst of damage, then build Hel's Touch back up again.

The charge requirement scales with world boss progression. Normal shots contribute their outgoing damage before the target's armor and damage resistances are applied, so resistant enemies do not make the ability charge artificially slower. The special shot itself never charges the next Hel's Embrace.

Hel's Embrace charge is stored on the individual bow, so accumulated charge survives unequipping, location changes, dropping the bow, and transferring it to another player.

Pelt of Helheim

A blackened cloak designed as the final piece of the Hel / Fenris archer setup.

Helheim's Ward becomes active only while all of the following are true:

• Pelt of Helheim is equipped;
• the full Fenris set is equipped;
• Hel's Oath is currently wielded;
• Hel's Touch V is active.

While the full synergy is active, the wearer becomes Very Resistant to Pierce damage.

Breaking any of the conditions removes the resistance immediately.

Thread of the Norns

A one-use survival trinket worn in the trinket slot.

When an equipped Thread of the Norns receives a lethal hit for its wearer:

• the trinket is consumed instead of allowing the player to die;
• health is restored to 50% of the health held before the lethal hit;
• the wearer receives 1.5 seconds of protection from health loss;
• the thread is permanently destroyed after activation.

Bone Crushers

Cestus weapon for aggressive close combat.

Main mechanics:

• taking damage builds a custom battle-fervor charge;
• the active ability becomes available when the charge is full;
• when the battle-fervor charge is full, press the middle mouse button (Mouse2) to activate the ability;
• the activation key can be changed in the configuration;
• creates a brief protective barrier;
• releases a shockwave around the player;
• grants bonus maximum health and very high attack speed;
• reduces armor while equipped.

Pit King's Cuirass

Aggressive armor designed around Bone Crushers.

• increases maximum health;
• works with Bone Crushers as part of the Steel Heart set bonus;
• the set improves the cestus active ability with stronger barrier strength and shockwave damage.

Cuirass of Silent Reckoning

Armor for surviving dangerous burst damage.

• when a post-armor hit would remove more than half of maximum health, only part of the damage is taken immediately;
• the remaining damage returns as delayed pain over the following seconds;
• gives the player time to react, but does not remove the eventual punishment.

Cloak of the Wounded Beast

Risky regeneration cloak.

• increases incoming damage;
• restores health every second;
• regeneration becomes stronger at lower health;
• fire, poison, and spirit damage suppress regeneration for a short time;
• healing is reduced when used together with the Cuirass of Silent Reckoning.

Cloak of Burned Resolve

Stamina-based defensive cloak.

• redirects 25% of incoming damage into stamina loss;
• the stamina cost is harsher than the redirected damage amount;
• if stamina is insufficient, the missing portion returns to health with increased damage.

Corrupted Brisingamen

A trinket-slot accessory that increases maximum carry weight.

Crossbow of the Shadow Hunt

Heavy crossbow designed for deliberate opening shots.

• high pierce damage;
• strong opening / backstab potential;
• heavy movement penalty;
• intended for slow, high-impact ranged combat.

Resource goods sold by Haldor

Haldor also sells additional resources and crafting materials. The prices below are defaults and can be changed in the server configuration.

Each item can optionally require a world progression key before it appears in the shop.

Metals

Item	Stack	Price
Iron	30	225
Copper	30	310
Tin	30	180
Silver	30	550
Flametal	30	800

Stone and building materials

These are sold as full stacks based on the item's vanilla maximum stack size.

Item	Stack	Price
Stone	Full stack	20
Grausten	Full stack	25
BlackMarble	Full stack	40

Wood materials

These are sold as full stacks based on the item's vanilla maximum stack size.

Item	Stack	Price
Wood	Full stack	10
RoundLog	Full stack	10
ElderBark	Full stack	30
FineWood	Full stack	150
YggdrasilWood	Full stack	250
Ashwood	Full stack	30
Blackwood	Full stack	100
CharredWood	Full stack	50

Cloth and crafting materials

Item	Stack	Price
JuteRed	Full stack	250
JuteBlue	Full stack	250
Resin	Full stack	100
Feathers	100	150
GreydwarfEye	Full stack	200
Tar	Full stack	250
Crystal	Full stack	250
Needle	Full stack	250

Items that can be sold to Haldor

The mod allows selling trophies and selected rare materials. Sell prices are configurable and synchronized from the server.

Rare materials

Item	Default Sell Price
SurtlingCore	50
BlackCore	100
MoltenCore	150

Trophies

Supported trophy groups include:

• Meadows;
• Black Forest;
• Ocean;
• Swamp;
• Mountains;
• Plains;
• Mistlands;
• Ashlands;
• Deep North;
• boss trophies.

Each supported trophy can have its own sell value.

Unlisted trophies can also use a configurable fallback sell value, allowing trophies introduced by other mods or future game updates to remain sellable.

Configuration

The configuration file is created automatically after the mod is started.

Shop prices, shop progression requirements, trophy sell prices, core sell prices, and synchronized Hel's Oath gameplay settings are controlled by the server in multiplayer.

Shop prices

The purchase price of every item added by Haldor Expansion can be changed independently.

Example:

Hel Oath Price = 2500
Pelt of Helheim Price = 2500
Thread of the Norns Price = 6666
Iron Price = 225
Silver Price = 550

World progression requirements

Every item added to Haldor's shop can optionally require a Valheim world global key.

Example:

Hel Oath RequiredGlobalKey = defeated_queen
Silver RequiredGlobalKey = defeated_gdking

Leave the value empty to keep an item available without a progression requirement:

Hel Oath RequiredGlobalKey =

Common boss progression keys:

defeated_eikthyr     - Eikthyr
defeated_gdking      - The Elder
defeated_bonemass    - Bonemass
defeated_dragon      - Moder
defeated_goblinking  - Yagluth
defeated_queen       - The Queen
defeated_fader       - Fader
defeated_frozenking  - Kall Fimbulbringer

Hel's Oath settings

Hel's Oath exposes synchronized balance settings including:

• base damage required for a full Hel's Embrace charge;
• explosion radius;
• normal Hel's Embrace coefficient;
• Hel's Touch V Embrace coefficient;
• Hel's Touch stack interval.

The active ability key is configurable and uses the middle mouse button by default:

Ability Key = Mouse2

The base charge requirement is automatically scaled by world boss progression. Enemy armor and resistance do not reduce charge gain from a valid normal shot.

Trophy sell prices

Supported trophies have individual configurable sell values.

Example:

Eikthyr Trophy Price = 70
Bonemass Trophy Price = 150
Fader Trophy Price = 1000

Setting a trophy sell price to 0 disables selling that trophy.

A configurable fallback is also available:

Unlisted Trophy Price = 10

Core sell prices

Surtling Core Price = 50
Black Core Price = 100
Molten Core Price = 150

Setting a sell price to 0 disables selling that item.

Multiplayer configuration

The server configuration is authoritative while connected to a multiplayer server.

Clients use the server's synchronized values while connected; their local configuration is not permanently overwritten.

Recommended playstyle

The custom equipment is intentionally built around strong benefits paired with meaningful drawbacks or build requirements.

The mod works especially well on higher difficulty settings and can be combined with mods such as:

• Smoothbrain-CreatureLevelAndLootControl;
• warpalicious-Monster_Modifiers;
• ASharpPen-Custom_Raids.

These are optional and are not required dependencies.

Requirements

Required dependencies:

• BepInEx 5;
• Jotunn.

When installed through a mod manager, dependencies are handled by the package manifest.

Multiplayer / dedicated server

Haldor Expansion changes gameplay and adds networked mechanics.

For dedicated servers, install the same version on:

• the server;
• every client / player.

The server configuration is authoritative for synchronized settings.

Using different versions between server and clients is not recommended.

Manual installation

Place:

HaldorExpansion.dll

into:

BepInEx/plugins/aveasura-HaldorExpansion/

Item icons are embedded inside HaldorExpansion.dll; players do not need to copy PNG files separately.

Compatibility

The mod has been tested in local and dedicated-server environments together with other gameplay mods, including:

• Smoothbrain-CreatureLevelAndLootControl;
• warpalicious-Monster_Modifiers;
• ASharpPen-Custom_Raids;
• Azumatt-AzuExtendedPlayerInventory;
• Azumatt-AzuSkillTweaks;
• rendl0449-CraftFromContainers;
• Advize-PlantEverything;
• Marf-FuelEternal.

Full compatibility with every version of third-party mods is not guaranteed, but no conflicts were found in the tested setup.

Localization

Supported languages:

• English;
• Russian.

Source code

The source code is available on GitHub:

https://github.com/aveasura/HaldorExpansion

Status

Current version: 1.2.2

The mod supports Valheim 1.0 and has been tested in both local and dedicated-server environments.

Balance and configuration options may continue to evolve in future releases.