DOOM 3 Cheats, Cheat Codes, Hints and Walkthroughs for Xbox One (2025)

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Storage Locker combinations

In Doom 3 you will find various storage lockers in the facility. You can find the codes from various peoples' PDA's. The first number will be the storage locker number, the second will be the combination required to open it. (Note: There are a few lockers that use the same codes to open them. Sometimes two different codes open the same locker. The Martian buddy code applies to Administration & Delta Labs Level 2B levels.

Storage Locker Codes (Resurrection of Evil)

Storage Locker Codes for all Storage Lockers in DOOM 3: Resurrection of Evil. These codes are entered via numeric keypads on Storage Lockers throughout RoE in order to unlock them and claim the items within.

Defeating the final Boss

When you each the end Boss, do not bother wasting your ammunition on him. Just stay away from him. Kill the Imps and other demons and use the Soul Cube on him. If you are play in co-op mode, shoot him. Use the Soul Cube on him about five or six times. On the last time you will see an intermission sequence of him dying.

Defeating the Guardian Of The Soul Cube

When fighting the Guardian Of The Soul Cube in hell, do not bother shooting his body. This is a waste of precious ammunition. Instead, blast his "searchers" with something with good coverage like the chaingun, and he will have to spawn more. When he does, a blue light will appear over his body. Shoot it with the rocket launcher. Do this a few times and he will die easily. Also, look in the room around the columns for ammunition, health, etc.

Defeating Sabaoth

A charged Soul Cube is requried for this trick. As soon as you enter the room with Sabaoth, the door in front of you will open and he will say "Welcome to mess hall". Fire the five rockets and you might detonate the BFG shot that he fires. After firing the five rockets he will be very close to you. Stand still and fire your Soul Cube to defeat him. Note: This was done under the normal difficulty setting.

Defeating demons

The best way to kill demons is to use the plasma gun. The plasma from the weapon can cancel the demon's plasma balls that are often thrown at you. Because the plasma gun is rapid fire, it will just keep firing until you release the trigger.

Skip part of second level

On the second level wheb you are getting ready to go underground, once you get your pistol enable the noclip code. Go into the office and press the button facing the window. You should see a demon creep up the window and get attacked by a zombie. Once you kill him you can skip through the level by continuing on.

Saving ammunition

If you can avoid it, try not to use weapons like the shotgun or others that have difficult to find ammunition on the weaker zombies. The flashlight (if you are fast enough) or just the pistol usually will suffice.

Achievements

Complete one of the following achievements to collect their Xbox Live Gamerscore points:

Secret Achievements

Complete one of the following Secret achievements to collect their Xbox Live Gamerscore points:

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