Unmaker/Doom Eternal

The Unmaykr is one of three Super Weapons in Doom Eternal. It is unlocked in The Fortress of Doom after obtaining all six Empyrean keys by completing all of the Slayer Gates. Although it is a returning weapon from Doom 64, this time the weapon is spelled "Unmaykr", which is a nod towards the Khan Maykr's name and the Maykr race introduced in Doom Eternal.

Doom Eternal
The Unmaykr uses the same ammo as the BFG, and can be fired 30 times per BFG ammo pickup.