Delta Labs - Level 3: Union Aerospace Research Division


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Doom 3 maps
Delta Labs - Level 3: Union Aerospace Research Division
Map name: game/delta3
"My patience with you is wearing thin!"
― Malcolm Betruger [source]

Delta Labs - Level 3: Union Aerospace Research Division is the eighteenth level of Doom 3. The player is hot on the heels of Betruger and travels through several second-generation teleporter units, eventually getting close to Betruger as he is teleporting. This sector features a large amount of hellish growth in it, indicating that the Hell is very near. This is also the last level where Z-Secs are fought, thus they are encountered very frequently here.


The marine continues the pursuit of Betruger. This sector of Delta Labs contains three teleport stations, located in chambers (each of them have to be first unlocked in nearby security stations), the marine has to use to travel around. When the marine reaches the teleport station 1, he needs to select "Balcony" in the control panel. Through the balcony the marine can proceed further and reach teleport station 2. When he reaches it, he needs to select "Storage" in the terminal. After using the teleport, the marine will find out that the bridge to sector 4 is destroyed. However, the marine can use the teleport station 3 to get to the exit. When the marine gets to the station, he can see Betruger himself teleporting to the exit. The marine soon does the same (by selecting "Exit" in the terminal), and proceeds to sector 4.


Level 3 Entrance

Chamber 1 Access
Security Station 1
HST Observation
Level 3 Lavatory
Lower Terminal Office
Chamber 1 Terminal - Lower
Chamber 1 Control
Decon Chamber 1 - Lower
T1 Observation - Lower
T1 Access
Teleport Station 1
T1 Stairwell
T1 Observation - Upper
Decon Chamber 1 - Upper
Chamber 1 Terminal - Upper
Chamber 1 Storage
Chamber 2 Access
Security Station 2
Upper Terminal Office
Upper Elevator Access
Conference Room
Terminal Processing
Processing Subfloor
Chamber 2 Terminal
Chamber 2 Control
Chamber 2 Storage
T2 Pad 1
Teleport Station 2
Lower Storage
Lower Elevator Access
Level 3 Common Area
Hydrogen Storage Transfer
Chamber 3 Access
Chamber 3 Terminal
Chamber 3 Control Access
Chamber 3 Control
Decon Chamber 3
Teleport Station 3
Security Station 3
Terminal Office Storage
Vent Shaft
Level 1 Elevator Access
Teleporter 4 Access
Transfer Bay





The enemy count on Nightmare is the same as on Veteran.

* One of the revenants has only 50 health.


The item count on Nightmare is the same as on Veteran, except the med kits are absent. There are no changes in the item amount in the BFG Edition.

Items Recruit Marine Veteran
Shotgun 1
Bullets (small) 3
Bullets (large) 2
Shells (small) 3
Shells (large) 3
Clip (small) 3
Clip (large) 15 14
Ammo belt 4
Grenades 7
Cells (small) 3
Cells (large) 9 7
Rockets (large) 5
Med kit (small) 2
Med kit (large) 14 11
Armor shard 17 13
Security armor 9
Adrenaline 1

There are also six health stations on the level, five of which have 100 health, and one with 60 health (all have 100 health in BFG Edition).

Starting inventory[edit]

If the player starts the level via a console command, they will start with these items:

Item Amount
Shotgun 1
Machine gun 1
Chain gun 1
Plasma gun 1
Rocket launcher 1
Chainsaw 1
Bullets (large) 1
Shells (large) 1
Grenades 1
Cells (small) 1
Rockets (small) 1

Locker codes[edit]

For the sources of the codes, see Doom 3 locker codes.
  • Storage locker #386 - Supplies: 836. Contains: med kit (large) x2, bullets (large), clip (large), ammo belt.
  • Storage locker #387 - Supplies: 836. Contains: med kit (large), security armor, clip (large), hand grenades, rockets (large).
  • Storage locker #317 - Supplies: 841. Contains: med kit (large) x2, security armor, bullets (large), clip (large) x2, rockets (large).


  • In Teleport Station 3, there are two optional locations the player can travel to before heading to "Exit" to find some supplies, "Security" and "Storage".


  • On the original Xbox version of the game this level was divided into two parts: Delta Labs - Level 3 South and Delta Labs - Level 3 North. Also, this port's version of the bathroom in the South section contains the vision of a marine turning into a zombie if the player looks at themselves in the mirror, which was moved from an earlier level. Additionally, Level 1 Elevator Access features an optional chaingun pickup with ammo, which trigger a tick ambush, something that is absent in the original Xbox version of Delta Labs (revisited).
  • In the T1 stairwell near the hellgrowth, demonic laughing noises similar to those made by cherubs can be heard.


External links[edit]

  • Walkthrough video by WoopzillaWalkthrough (part 1; part 2) on YouTube. Veteran difficulty; part of a full game run.