Skip to content
Walkthrough (Hints and Tips)                                        [D3.04.01]
Doom 3

Walkthrough (Hints and Tips) [D3.04.01]

Master Doom 3 with essential tips on saving, combat, enemy tactics, and using your flashlight effectively. Learn to survive Mars City Underground.

By ···10 min read·Multi-source verified
1 reading this guide  

Master Doom 3 with essential tips on saving, combat, enemy tactics, and using your flashlight effectively. Learn to survive Mars City Underground.

Walkthrough
  1. 1
    Save your game frequently, especially when not in immediate danger.
  2. 2
    Familiarize yourself with the game's controls before entering Mars City Underground to avoid being an easy target.
  3. 3
    Consider increasing the in-game brightness as Doom 3 can be quite dark.
  4. 4
    Engage with all NPCs (non-player characters), interact with objects, and read or listen to any available information to immerse yourself in the story.
  5. 5
    Reload your weapons during lulls in combat to ensure you have a full magazine when an encounter begins.
  6. 6
    During fights, avoid standing near explosive objects.
  7. 7
    Always aim for the head when engaging enemies for critical damage.
  8. 8
    Pay close attention to audio cues, as they can alert you to nearby enemies.
  9. 9
    Select the appropriate weapon for the situation; for instance, don't use a pistol against a boss or a plasma gun on a single Trite.
  10. 10
    When entering a new area, equip the shotgun as a precaution against immediate threats.
  11. 11
    Avoid using a Health Stand if your health is already at 99%, as it wastes the machine's charge for minimal gain.
  12. 12
    Utilize Sentry Bots to assist in combat; they have unlimited ammunition and can detect enemies.
  13. 13
    Avoid shooting glass unnecessarily, as it might reveal areas with limited oxygen, forcing you to move faster.
  14. 14
    Conserve health items like medkits if you are already at full health, saving them for later when they might be more critical.
  15. 15
    Assign the Flashlight to the right mouse button for easier access, allowing you to switch between weapons and the flashlight fluidly.
  16. 16
    Use your flashlight to discover hidden items and secrets.
  17. 17
    Conserve ammunition by not shooting dead zombies; they are no longer a threat.
  18. 18
    Maintain distance from enemies whenever possible, especially those with dangerous close-range attacks. If an enemy is sufficiently weakened, you can close the distance for a headshot (a shot that lands on the enemy's head, usually an instant kill) with the shotgun.
  19. 19
    When performing a leap jump, adjust your timing as your character's feet are further back than you might expect.
  20. 20
    Use cover (press the cover button to crouch behind walls or objects) during combat or while reloading to evade attacks like rockets from Mancubi or Revenants.
  21. 21
    Shelves and pillars provide excellent cover, as some projectiles cannot pass through them while you can still shoot.
  22. 22
    Do not hesitate to backtrack to previous areas if you need to find health, ammunition, or armor.
  23. 23
    Enjoy the game experience.
Tips
  • Shooting Monsters: When facing missile-wielding enemies like Imps or Revenants, find open areas to fight in and dodge their projectiles by moving left or right. Start your dodge earlier if you are closer to the enemy. Avoid advancing into unknown territory during a fight, as this may trigger more enemies. The Shotgun is effective at close range, while the SMG is better for distant targets. The plasma gun can be useful against Revenants, potentially destroying their rockets.
  • Non-Shooting Monsters: For melee or charging enemies like Lost Souls or Pinkies, retreat to a hallway to funnel them into a single direction of attack. The Shotgun is effective here, potentially hitting multiple enemies with one blast, but time your shots carefully due to its reload speed. Shotgun ammo is consistently available, making it a reliable weapon.
  • General Tactics:
  • Baby-tactic: Move slowly and be ready to shoot before an enemy can attack.
  • Hero-tactic: Run through an area, turn around, and shoot any enemies that appear.
  • Fast-tactic: Run through areas quickly, ignoring most encounters.
  • General Combat Advice:
    • Listen carefully for enemy audio cues.
    • Use the right weapon for the situation.
    • Equip the shotgun when entering new rooms.
    • Conserve health items if you are not critically injured.
    • Use your flashlight to find hidden items.
    • Maintain distance from enemies.
    • Use cover effectively.
    • Backtrack for resources if needed.

    100% Human-Written. AI Fact-Checked. Community Verified. Learn how AntMag verifies content