Crucible - The Doom Wiki at

The Crucible, a central plot item in Doom (2016) and in Doom Eternal, is an artifact from Argent D

The Mark of the Slayer supposedly revealed as a symbol of “a sword

Crucible - The Doom Wiki at

Crucible, Doom Wiki

Location:The Crucible of Doom (Red Door) - Pirate101 Wiki

Hub 1: Bright Crucible - The Doom Wiki at

Novik, Doom Wiki

Unmaker (Doom 64), Doom Wiki

Doom Slayer, Mythos and Legends Wiki

The World Spear, Doom Wiki

Weapon, Doom Wiki

Doom Slayer, Doom Wiki

Doom (2016 video game) - Wikipedia

Crucible (Doom) Wiki