Doom Eternal is id Software's 2020 masterwork — a first-person shooter that reframes the genre as a high-speed strategic puzzle game disguised as the ultimate power fantasy. Every demon is a resource management challenge: Cacodemon for armor (grenade in mouth for burst pickup), Arachnotron for ammo (destroy the brain turret), Mancubus for health (flame them with the Flame Belch). Running out of any resource means using the right demon type to replenish it. Doom Eternal is, beneath its metal soundtrack and gore, a deeply mechanical game about resource allocation at 60 frames per second.
The movement system matches the combat in ambition: dash (two charges), double jump, horizontal monkey bars, and vertical poles create a three-dimensional arena that punishes standing still and rewards constant motion. The Slayer moves like a hummingbird with a shotgun — positioning, timing, and priority targeting are as important as raw aiming skill. Master Player 2020 events and Ultra-Nightmare runs (permadeath, hardest difficulty) represent some of the highest-skill-ceiling challenges in gaming.
Two DLC campaigns — The Ancient Gods Parts 1 and 2 — add 6–8 hours each and escalate the combat difficulty beyond the main game. Part 2 ends the Slayer's story with a boss encounter widely considered the greatest in the franchise. At current sale prices, Doom Eternal with both DLCs is one of gaming's exceptional bargains.
Demons are resources: Flame Belch gives armor, chainsaw gives ammo, glory kill gives health. Managing three resources simultaneously is the core skill.
Dash (two charges), double jump, monkey bars, and poles create 3D arena movement. Standing still is death — constant motion is survival.
The Super Shotgun with Meat Hook grapple, Ballista, Heavy Cannon, Plasma Rifle, and BFG create a weapon wheel requiring situational mastery.
Each demon type has a specific weak point and priority level. Managing a room of 15+ demon types requires instant threat assessment.