Surtur's Sword (Twilight Sword)
Surtur's Sword, also known as the Twilight Sword, is one of the most prestigious weapons in Infinity Gauntlet Thanos Simulator. Obtained by defeating the Surtur boss in the Catacombs, it requires the Heart of Ymir, Hadron Enforcer, and Crown of Black Fire from the Lunar World puzzle.
Full Obtain Route
- Obtain the Heart of Ymir by defeating Eson in World5.
- Use Snap of Ymir to freeze lava and access the True Catacombs.
- Place the Heart on the blue pedestal to spawn five Servant of Celestial [L5] — break shields with Hadron Enforcer Explosion Projectile.
- Solve the Crown Room puzzle in Lunar World for the Crown of Black Fire.
- Return to Catacombs and place the Crown on the yellow pedestal to summon Surtur.
- Defeat Surtur using Snap of Ymir + Disintegrate. Dodge one-shot meteors.
Detailed guide: How to get Surtur's Sword.
Boss Fight Tips
- Surtur spawns Servant of Celestial [Dead] adds — clear or dodge them
- Meteors are one-shot kills — use Shield or Teleport to survive
- Snap of Ymir freezes Surtur; follow with Disintegrate for damage
- Death resets the entire chain — come fully prepared
Tier Placement
Surtur's Sword ranks S-tier on our tier list for endgame damage and prestige. The investment cost is among the highest in the game due to the multi-boss prerequisite chain.
Frequently Asked Questions
Is Surtur's Sword the best weapon?
It is S-tier endgame alongside Upgraded Gauntlet and Cosmi-Rod. The long obtain route makes it a completionist trophy.
What happens if I die to Surtur?
You must repeat the Crown placement and boss fight. Prepare shields and healing before attempting.
Do I need Hadron Enforcer for Surtur?
Yes. It is required earlier to break L5 celestial shields and is part of the full prerequisite chain.
What is the Crown of Black Fire?
A puzzle reward from the Lunar World Crown Room. Symbols on Catacombs walls hint at the disintegrate sequence.