Extra life - The Doom Wiki at

The extra life is a power-up which is introduced in Doom Eternal.

Immora - The Doom Wiki at

Insanity Deathmatch - The Doom Wiki at

Doom Eternal All Extra Lifes Locations

Maykr, Doom Wiki, Fandom

The Blood Swamps - The Doom Wiki at

Doom Patrol - Wikipedia

Doom Bible - The Doom Wiki at

Final level extra life glitch :: DOOM Eternal General Discussions

E3M1: Hell Keep (Doom), Doom Wiki

Doom Slayer, Doom Wiki