In ODIN: Valhalla Rising, mastering your character’s power isn’t just about leveling up or acquiring gear — it’s also about unlocking powerful Sigils, divine emblems imbued with the essence of the gods themselves. Among the most sought-after is the Sigil of Flames, a fiery emblem said to hold the blessing of Surtr, the fire giant who burned the world during Ragnarok. It grants massive offensive boosts and Odin Diamonds special flame-infused abilities that can turn the tide of battle.

This guide will walk you through everything you need to know about unlocking the Sigil of Flames — including where to find it, what requirements to meet, how to complete its trial, and the best strategies to wield its full potential.

1. What Is the Sigil of Flames?

Sigils in ODIN: Valhalla Rising are special endgame enhancements that provide unique passive bonuses, elemental resistance, and empowered abilities when equipped. The Sigil of Flames is a Tier 3 Elemental Sigil focused on fire damage amplification, burn status enhancement, and critical burst potential.

When fully awakened, the Sigil of Flames grants the following effects:

+15% Fire Damage

+10% Burn Duration

5% chance to trigger “Surtr’s Wrath”, an AoE flame eruption dealing 300% base damage.

+5% Attack Speed when under the “Ignite” buff.

These bonuses make it a top-tier option for melee DPS classes like Berserker and Rogue, as well as ranged casters who specialize in fire spells, such as Mage (Pyromancer path).

2. How to Unlock the Sigil of Flames

Unlike lower-tier Sigils that can be crafted or purchased, the Sigil of Flames must be unlocked through a multi-step questline tied to the Volcanic Highlands region. You’ll need to reach Level 75 or higher and complete several pre-requisite missions before you can even begin its trial.

Here’s the full path to unlocking it:

Step 1: Complete “Ashes of Surtr” Main Story Quest

To start your journey, you must finish the main story quest “Ashes of Surtr” in the Volcanic Highlands zone. This quest introduces the fiery regions of Muspelheim and pits you against flame-infused beasts like the Infernal Hound and Magma Drake.

Once completed, it unlocks a new world event called “Emberstorm Awakening” and allows you to access the Temple of Eternal Flame — the location of the Sigil trial.

Tip: You’ll need at least Fire Resistance 200+ to survive in the region comfortably. Craft Fireproof Potions from the Volcanic Resin gathered in the area.

Step 2: Collect Flame Sigil Shards

After completing the story quest, your next objective is to gather Flame Sigil Shards, rare drops needed to forge the key that unlocks the trial.

You’ll need 10 Flame Sigil Shards, which can be obtained from:

Elite Flame Giants (Level 75+) in Volcanic Highlands.

Weekly Raid: Surtr’s Vanguard, where you can earn up to 3 shards per week.

Treasure Caches in the Emberstorm Event (participate daily for a chance).

Once you’ve collected 10 shards, take them to Eldthara the Seer, an NPC located at the Flamewatch Outpost, to forge them into the Key of Embers. This key grants you entry to the Sigil trial.

Step 3: Enter the Temple of Eternal Flame

With the Key of Embers in hand, head to the Temple of Eternal Flame, located at the far east edge of Volcanic Highlands (coordinates: X432, Y287). The entrance is guarded by Flamebound Sentinels — powerful elite enemies that deal heavy fire damage.

Once inside, you’ll face a three-phase Trial of Surtr, a solo challenge designed to test your combat and survival skills.

3. The Trial of Surtr – Sigil Challenge

The Trial of Surtr is a high-level solo dungeon where you must defeat the elemental guardians protecting the Sigil. Each phase introduces a different challenge, culminating in a boss fight against Surtr’s Avatar.

Phase 1: The Inferno Blades

Two flame warriors attack in unison, alternating between melee combos and fire waves.

Strategy: Focus on dodging their flame arcs. Interrupt their dual slam attack using stun or knockdown skills.

Phase 2: Magma Core

You’ll face a molten elemental that summons lava pools across the floor.

Strategy: Avoid standing in molten zones. Burst down the core during its Overheat phase when it becomes vulnerable.

Phase 3: Surtr’s Avatar (Boss)

A massive fire giant wielding a sword of molten rock.

Uses Flame Pillar, Meteor Slam, and Eruption Wave attacks.

At 50% HP, he enters “Wrath Mode,” inflicting permanent burn stacks on players.

Boss Strategy Tips:

Maintain distance during Meteor Slam; it has a long wind-up but instant detonation.

Use Cold-based attacks or Water Sigil effects to counter his regen phase.

Save your burst cooldowns for when his sword glows red — this indicates his armor is momentarily weakened.

Defeating Surtr’s Avatar rewards you with the Dormant Sigil of Flames.

4. Awakening the Sigil of Flames

The Dormant Sigil isn’t immediately usable. You must awaken it at the Altar of Embers, also located within the temple. Awakening requires:

50,000 Gold

3 Flame Sigil Shards

1 Surtr’s Heart (Boss drop from the Trial)

Once awakened, the Sigil of Flames is permanently added to your Sigil inventory and can be equipped through the Divine Sigil Menu. It also unlocks a new Skill Augmentation Slot, allowing you to imbue flame traits into specific abilities.

5. Best Builds for the Sigil of Flames

The Sigil synergizes best with offensive fire-based or DoT builds. Here are the top recommendations:

Mage (Pyromancer): Amplifies Fireball, Meteor Rain, and Inferno Surge damage significantly.

Berserker: Pairs perfectly with Raging Blaze and Whirlwind, adding AoE burn effects.

Rogue (Flame Dancer subclass): Boosts critical rate during Ignite Dance, making for high burst windows.

For hybrid classes, combine the Sigil of Flames with Sigil of Storms to trigger the Elemental Overload synergy for +10% elemental crit damage.

6. Farming and Enhancement Tips

Once unlocked, you can enhance the Sigil up to +10 using Flame Essence, obtained from weekly Volcanic Dungeons and the Emberstorm Event. Each enhancement increases its base fire damage bonus by +2%.

If you’re struggling with shard farming:

Join Guild Ember Raids — members often share boss rotations for guaranteed drops.

Participate in World Boss: Molten Behemoth events, which have a 10% drop chance for Sigil fragments.

Conclusion

Unlocking the Sigil of Flames in ODIN: Valhalla Rising is one of the most rewarding late-game challenges available. It tests your combat readiness, elemental mastery, and cheap Odin Diamonds perseverance — but the reward is a divine emblem that channels the true power of fire.

With the Sigil equipped, your character not only wields Surtr’s fury but also gains a new visual aura, symbolizing mastery over the element of flame itself. Whether you’re burning down raid bosses or dominating PvP arenas, the Sigil of Flames ensures your enemies will feel the heat of Ragnarok itself.