Doom Eternal: Complete Beginner's Guide

Getting Started in Doom Eternal

Doom Eternal's opening hours are intentionally overwhelming. Don't panic — the game is teaching you its vocabulary. Your first priority: internalize the three resource sources. See a demon? Ask yourself: do I need health (glory kill it), armor (flame belch it), or ammo (chainsaw it)? This question should become automatic by level 3. The Cacodemon is your best early armor source — throw a grenade into its mouth (hold grenade button, aim at the mouth, release) then glory kill the staggered result.

The tutorial is mandatory and dense. Don't skip any segment — each section introduces a mechanic that becomes essential later. The Arachnotron encounter teaches threat priority; the Baron fight teaches the Ballista's role; the Marauder introduction (end of the game) tests everything simultaneously.

The Priority System

Every room you enter, assess the threat priority immediately: 1) Arachnotron (destroy the brain turret — it controls vertical space and fires continuously), 2) Pain Elemental / Cacodemon (airborne threats that pursue aggressively), 3) Cyber-Mancubus (high health, high damage — chainsaw for ammo), 4) Everything else. Never let a room's highest-priority demon survive beyond the first 10 seconds of an encounter. The longer it survives, the more it degrades your positioning.

Weapon Priority and Usage

Super Shotgun + Meat Hook: your primary gap-closing tool for glory kills and close-range burst. Use the Meat Hook to close distance on priority targets, not just for damage. Ballista: your highest single-shot damage weapon — use the Arbalest mod for explosive hits on grouped enemies or single high-HP targets. Heavy Cannon Precision Bolt: essential for destroying weak points at range (Arachnotron brain, Revenant shoulder missiles). Plasma Rifle: best armor-stripping weapon against Soldiers. Switch weapons constantly — camping any single gun is a mistake.

Essential Tips

1. Dash toward danger, not away from it. Most players instinctively dash away from threats. Dash toward them to close distance for glory kills before your health runs out.
2. The Flame Belch has a 6-second cooldown. Use it constantly on large demons — don't save it for perfect moments. Constant armor generation keeps you alive.
3. Marauder strategy: He blocks all damage except when his eyes glow green (a 0.5-second window after his axe swing). Bait the axe with a Super Shotgun blast, then hit the green window with a Ballista shot. Ignore all other demons during a Marauder fight.
4. Sentinel Crystals (found in levels) permanently upgrade health, armor, or ammo capacity. Prioritize ammo capacity — running dry kills runs.
5. Master Levels (unlocked after completing each normal level) are remixed versions at maximum difficulty — tackle them after completing the full campaign.
6. The Crucible (melee weapon) one-shots any non-boss demon. Save charges for Barons, Tyrants, and panic situations — not regular encounters.
7. Slayer Gates are optional challenge rooms with the hardest combat in the game. They unlock Empyrean Keys for the Unmaykr weapon. Attempt them only when comfortable with the base game's combat.

First Major Boss: Hell Priest Deag Nilox

Nilox's arena fills with mid-tier demons that must be managed while the priest summons reinforcements from an elevated platform. Phase 1: ignore Nilox and clear the floor demons first — you need full resources before engaging him directly. Use flame belch and glory kills aggressively to maintain armor and health. When the floor is clear, approach the platform: the Super Shotgun Meat Hook reaches the platform edge; two Super Shotgun blasts plus a Ballista shot eliminate him quickly. Phase 2 adds tougher demons — repeat the clear-floor-then-execute pattern. His weakness is that he does minimal personal damage — the room demons are the actual threat.

Frequently Asked Questions

Q: Is Doom Eternal harder than Doom 2016?
A: Significantly — on the same difficulty settings. 2016 allows passive play; Eternal demands constant active resource management.

Q: Should I play Doom 2016 first?
A: Not required — Eternal is self-contained mechanically. Playing 2016 first helps with story context but adds no mechanical preparation.

Q: What is the hardest challenge in Doom Eternal?
A: Ultra-Nightmare (permadeath on the hardest difficulty). Completing it is considered one of gaming's most demanding achievements.

Q: Is the DLC worth it?
A: Both Ancient Gods DLCs are outstanding. Part 2's final boss is the franchise's best encounter. Both are essential for Doom Eternal fans.

Q: What settings maximize PC performance?
A: Set Shadows to Medium, Reflections to Low — both are expensive and have minimal visual impact. All other settings can remain High for solid 60+ fps on mid-range hardware.