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“You're not supposed to be in here! You're going to ruin the surprise!”
The following article/section contains spoilers. Please complete The Sacrifice quest before proceeding.

The facade has cracked and you are beheld by the truth.
—In-Game Description

Sunder is an alternative helmet for Excalibur UmbraIcon272.png Excalibur Umbra. It is a battle-damaged version of the regular Excalibur Umbra Helmet, exposing the left half of Umbra's human face that had been mutated into Infested-like flesh.

Players receive the helmet in their inbox after completing the The Sacrifice quest.


To equip your newly acquired helmet, go into the "Arsenal" page, then click on 'Appearance' tab, the Helmet will be the first item in the section labeled 'Physique'.


  • The Excalibur Umbra Sunder Helmet is the first alternate helmet that is obtained from a quest instead of from the Market.
    • This is also the first alternate helmet in the game to reveal a quarter of a Warframe's human face (possible remains, for that matter), unlike all other helmets.
  • This helmet makes its debut in the The Sacrifice quest during the cutscene which takes place after players have crafted Excalibur Umbra in their Foundry and try to equip him in their Arsenal for the first time, appearing as Umbra howls and goes rogue.
  • The bloodvessels around the "Eye" of the helmet glow with the color of Umbra's Energy color.
    • The eye's main color (although milky-white) will change depending on Umbra's Primary color.
  • Similar to the Excalibur Umbra Helmet, this helmet cannot be equipped on ExcaliburIcon272.png Excalibur or Excalibur PrimeIcon272.png Excalibur Prime.

Patch History[]

Update 23.0 (2018-06-15)

  • Introduced along with Excalibur Umbra and The Sacrifice.

Last updated: Update 24.2 (2018-12-18)