Boss Guide#

Valheim 1.0 has 8 bosses (the Forsaken), up from early access with the Ashlands boss Fader and the Deep North endgame boss Kall Fimbulbringer. Every boss trophy (except Kall’s) grants a Forsaken Power when hung on the Sacrificial Stone. This page collects the verified summon offerings, HP figures, weaknesses, and power effects; move details and unverified numbers are omitted — in-game practice wins.

Boss Overview Table#

#	Boss	Biome	Summon offering	HP (community wiki)
1	Eikthyr	Meadows	Deer Trophy ×2	500
2	The Elder	Black Forest	Ancient Seeds ×3	2500
3	Bonemass	Swamp	Withered Bones ×10	5000
4	Moder	Mountains	Dragon Eggs ×3	3500
5	Yagluth	Plains	Fuling Totems ×5	8000
6	The Seeker Queen	Mistlands	Sealbreaker	18000
7	Fader	Ashlands	Bells ×3	25000
8	Kall Fimbulbringer	Deep North	Malicious Blood ×3	47000 (all three phases; one source lists a final-bar 30000 — in-game wins)

HP figures come from community wiki consensus and may vary with difficulty and world modifiers — trust the in-game numbers.

The Forsaken Power System#

The first 7 bosses’ trophies, hung on the Sacrificial Stone, each unlock one Forsaken Power;
Each power lasts 5 minutes with a 20-minute cooldown;
The Deep North endgame boss Kall Fimbulbringer grants no Forsaken Power and no trophy buff.

1. Eikthyr#

Item	Content
Offering	Deer Trophy ×2
HP	500 (community figure)
Drop	Hard Antler — crafts the antler pickaxe, your ticket to copper and tin
Forsaken Power	Running / jumping / swimming stamina cost -60%

Prep and strategy: the first boss of the run — flint weapons plus a bow handle him. Bow chip damage is safest; in melee, land one or two hits in his attack gaps and reset distance. The trees around the arena work as cover.

2. The Elder#

Item	Content
Offering	Ancient Seeds ×3
HP	2500 (community figure)
Weakness	Weak to fire — fire arrows are the core damage source
Forsaken Power	Wood-cutting and pickaxe damage +60%, healing +30%

Prep and strategy: bronze gear and plenty of arrows, fire damage first. Use the altar’s stone formation for cover, keep mid-range pressure on, and leave immediately when ground-root telegraphs appear. The Elder is the classic “win by arrow volume” fight — stock up before leaving home.

3. Bonemass#

Item	Content
Offering	Withered Bones ×10
HP	5000 (community figure)
Weakness	Weak to blunt; immune or highly resistant to pierce
Drop	Wishbone — the key tool for finding underground silver and treasure
Forsaken Power	Physical resistance up and blocking costs no stamina (sources disagree on 25% vs 50% — in-game wins)

Prep and strategy: poison-resistance mead is mandatory. Blunt weapons carry the fight; pierce weapons are nearly worthless here. Pick open, dry terrain, respect the poison AoE, and clear the adds before the boss.

4. Moder#

Item	Content
Offering	Dragon Eggs ×3
HP	3500 (community figure)
Weakness	Resists frost, weak to pierce — the bow is the main damage; frost and fire arrows both underperform
Drop	Dragon Tear — the key material unlocking the Artisan Table
Forsaken Power	Tailwinds while sailing, +300 carry weight, +10% move speed, 50% frost resist

Prep and strategy: an open-field encounter; the mountain rocks are natural cover. Chunk her health down with ranged arrows and melee during her landing windows. Bring full cold-weather prep to Mountain-biome standard.

5. Yagluth#

Item	Content
Offering	Fuling Totems ×5
HP	8000 (community figure)
Weakness	No verified weakness recorded by this site — in-game practice wins
Drop	The Yagluth trophy and its power
Forsaken Power	50% lightning resistance, farming +25, damage +10% (1.0 figures)

Prep and strategy: fire AoE is the fight’s main threat — fire-resistance mead is mandatory, with black-metal-era gear as the baseline. The arena is open: keep moving, use the boulders to break the AoE, and outranging him by foot is the fundamental discipline.

6. The Seeker Queen#

Item	Content
Offering	The Sealbreaker (crafted from fragments); repeat fights use 3 Seeker Soldier trophies
HP	18000 (community figure)
Weakness	No verified weakness recorded by this site — in-game practice wins
Forsaken Power	Eitr regen +100%, sneaking costs no stamina, 50% poison resist

Prep and strategy: the Mistlands environment is hostile enough — bring lighting, poison prep, and magic gear before this fight. Eitr magic (elemental and blood) takes a clearly larger share of damage here; in co-op, splitting aggro and clearing adds is the safer shape.

7. Fader#

Item	Content
Offering	Bells ×3, crafted from 3 bell fragments found in the Charred Fortress
HP	25000 (community figure)
Weakness	Resists fire, weak to frost — keep flame damage off your bar
Forsaken Power	Adrenaline +100%, stagger -50%, 50% fire resist

Prep and strategy: the Ashlands itself is a high-threat environment — Grausten fortification and fire-resistance prep are the prerequisites. Avoid fire damage and lean on frost. Siege engines measurably lower the difficulty of this stage’s fortress assaults.

8. Kall Fimbulbringer#

Item	Content
Offering	Malicious Blood ×3, summoned at the “strange bowl” altar
HP	47000 (all three phases combined, community figure; one source lists a final-bar 30000 — in-game wins)
Phases	Three total; phase two is a gauntlet of past bosses’ spirits
Forsaken Power	None — the Deep North endgame boss grants no Forsaken Power

Prep and strategy: the game’s final challenge, built for the 1.0 additions — Nordic weapons, the three Deep North armor sets, and the backpack pocket. The spirit-gauntlet phase means a run of empowered shadows of earlier bosses, so plan stamina management and supplies for a long siege. The Deep North’s grappling hook and ice sliding will earn their keep in the arena too.

Forsaken Power Table (1.0)#

Trophy	Effect
Eikthyr trophy	Running / jumping / swimming stamina -60%
The Elder trophy	Wood-cutting and pickaxe damage +60%, healing +30%
Bonemass trophy	Physical resistance up and stamina-free blocking (25% or 50% depending on source — in-game wins)
Moder trophy	Sailing tailwinds, +300 carry weight, +10% move speed, 50% frost resist
Yagluth trophy	50% lightning resistance, farming +25, damage +10%
The Seeker Queen trophy	Eitr regen +100%, no-stamina sneaking, 50% poison resist
Fader trophy	Adrenaline +100%, stagger -50%, 50% fire resist

Universal Boss-Prep Checklist#

Category	Point	Notes
Food	All three slots full	Health, stamina, and regen are all required
Resistances	The right resistance mead	Match the boss and biome’s elemental threat
Gear	Current era’s best	At least at the challenged biome’s gate
Terrain	Prep the arena in advance	Platforms, cover, torches as needed
Spawn point	Bed and portal forward-deployed	Fast corpse runs back to the fight
Spare gear	One backup set	You need weapons on the corpse run too

Common Boss Mistakes and Fixes#

Mistake	Consequence	Correct approach
No resistance mead	Elemental damage deletes you	Check resistance status before entering the arena
Burning stamina	No roll left when it matters	Keep half a bar after every damage window
Chasing the boss only	Surrounded by adds	Clear the adds first, then the boss
Rough arena footing	Terrain kills your footwork	Level the ground and build ramps beforehand
Soloing a long fight	Supplies run dry	Set a spawn point at the door and pack for a siege

The Defeat Order#

There is no skipping here — each boss’s summon materials are hard-bound to the previous stage’s gear depth. Push 1 → 8: Eikthyr gives the antler pickaxe, The Elder opens woodcutting throughput, Bonemass gives the Wishbone for silver, Moder gives the Dragon Tear and sailing comfort, Yagluth gives farming and damage, The Seeker Queen gives Eitr and stealth, Fader gives adrenaline and fire resistance — and finally, in the Deep North, Kall Fimbulbringer closes the cycle of sacrifice.