Delta Labs - Level 1: Union Aerospace Research Division

DELTA LABS - LEVEL 1 - "The Delta Complex is the most advanced research facility on Mars. Sector 1 contains the power systems, energy core distribution center, and services the administrative functions of the entire Delta Complex."

Delta Labs - Level 1: Union Aerospace Research Division is the fifteenth level of Doom 3. This level contains no demonic alterations of any kind for quite some time upon entering it, save for some "minor" demonic sounds and lights in some halls and monsters appearing outside from time to time. The player must initiate power by activating the main reactor.

AREAS IN DELTA LABS LEVEL 1:
 * Delta Transfer Bay
 * Delta Entryway
 * Delta Control Corridor
 * Delta Systems Control
 * Delta Main Lobby
 * Delta Lobby Corridor
 * Delta 1 Access Lobby
 * Delta 1 Access Stairs
 * Delta 1 Service Hallway
 * Delta 1 Service Area 1
 * Delta 1 Service Area 2
 * Delta Service Warehouse
 * Storage Room 21-D
 * Delta Service Tunnel 2
 * Delta Reactor Support
 * Reactor Support Hallway
 * Delta Reactor Room
 * Reactor Control Hallway
 * Delta Reactor Control
 * Reactor Service Access
 * Delta Reactor Engineering
 * Delta Service Tunnel 1
 * Left Access and Storage
 * Delta Authority Systems
 * Delta Service Elevator
 * Delta Authority Junction
 * Delta Authority Archives
 * Delta Authority Lobby
 * Delta Authority Hallway 1
 * Delta Labs Main Elevator

Walkthrough
Take your time, as this level is the longest so far. The first part is easy. You just have to ignore all the creepy noises, grab the Backpack and the Plasma Gun right at the beginning near a corner, and reach the control room to activate the main computer. A message tell you that you need the data linker. After backtracking a bit, a grid on the floor will explode. Crawl in and you'll land in a large lobby room, with two locked doors on your back, a massive locked door on the right apparently leading to the CPU Complex, two unusable elevators on the front, a map in the center, and a corridor to the left. Head down there, until you see a corpse keeping some sort of box under his arm. This is the data linker. You have also a Large Cell pack here, and another two locked doors. Return to the control room and restore some power in the Delta Complex. You'll then have a video call from a nearby computer. It's a message from Sergeant Kelly, who tells you to meet him somewhere further in the complex. Return to the lobby room. The first Imp will crawl out from the broken floor.

When you arrive in the lobby room, you notice the two locked doors are now open, connecting to both the beginning corridor and the control room (thus avoiding you having to crawl under the floor again). When you approach the map, you hear an an Imp spawning between the back doors and a Demon running at you from the left corridor. Continue your return to where the data linker was. Notice the corpse now hanging on the roof. A Tentacle Commando will run at you from a niche to the left of the corpse. The right door leads to an Imp hiding behind a corner, along with a Medkit, some Security Armor, and a Large Rocket Box. The left door has a jumping Imp behind it, a curvy dark corridor with an Imp teleporting in, and another hanging corpse. The next door leads to a room with a Zombie on the left. Once he's awake, a cache near the entrance door opens, revealing a second Zombie. If you approach the Security Armor in here, a Demon will spawn on the exit door. Also, if you approach the exit door, a panel in front of you will open and reveal a Tentacle Commando. The door leads to a small blue engine room. You can hear a Cacodemon wandering nearby, but it's actually in a later room. An Imp will come from the roof. There is a Cell pack on the left, with a Zombie and a Health Station on the right. Beware, approaching the station will spawn a Tentacle Commando at the entrance door. The next area is a large warehouse, where a bunch of Lost Souls will appear. Kill them, venture further, and Bertruger will say "Your friends are with me now, and soon you will join them...", before teleporting in a Revenant. You can grab penlty of goodies (including 4 Cell packs, a Stimpack, Medkit, some Clips, and 3 Machine Guns) in the room. Killing the Revenant opens a vent with a Medkit inside. Crawl into here, it leads to a tiny room, where the Cacodemon actually hides in your right. There is also a cache revealing a second Imp at the left of the door. If you approach it, you'll find a bonus locker containing a second Large Rocket Box, 2 Armor Shards, and some Shells. Behind the door is an Imp immediately on the right. Step down (you can go back by pushing the nearby box and jumping on it then on the ledge) and destroy some barrels, as a Revenant will teleport in right in front of you. Then 2 Cacodemons will come from a hole in the wall in front of you. Follow the path. When it turn to the left, there is another Cacodemon. You can climb the stairs here to reach a small dark tunnel with an Imp and a lift. Don't take it yet. Instead, backtrack a bit and you'll see another stairway leading to a ledge in the tunnel, with Armor Shards, Plasma Gun, Medkit, and a Stimpack on crates at the end. Approaching the bonuses will spawn an Imp in front of you and a Tentacle Commando somewhere from behind. Once all is clear, grab all the health and ammo you can carry, before activating the lift, as you won't be able to go back (until the end of the level, which will allow you to walk freely in the whole level).

The lift crashes, and you are in a small dark room with 2 Imps. The door in front of the lift will open on a Revenant. There is a Stimpack in the room, and a seemingly unreachable Medkit behind a grid. After this door is a small corridor, with another Stimpack and a Zombie, leading to the landmark of the level, the Reactor Room. It's a massive device which apparently powers the Delta Labs. You'll have to deal with 4 Lost Souls, before climbing up a ladder. On the upper floor, two additional Lost Souls will spawn near the door, which is at right from the ladder. Behind the door is a Revenant. Before venturing in, you can reach the end of the path. A Cacodemon will appear from below near the window to the right, while 3 Lost Souls will appear when you'll approach the Large Cell Pack and the Stimpack at the end of the path. After the Revenant is the reactor's control room, with a computer you have to activate at the left, a closed door at the right, and an open door in front (which leads to small 3-floored room, with a Zombie, Health Station, and a ladder). Climb it and kill the Imp in the small catwalk in front of you, then the zombie lurking somewhere in the darkness. There is an Ammo Belt and a Medkit here. Climb another ladder, and be ready when you get close to the exit door, as a traditional "front and behind Imps duo" will teleport in. You can jump from here to reach another Stimpack below. The door obviously leads on the reactor room, on its final floor. Walk a few steps and 3 Cacodemons will appear at once. Dispose of them, grab the PDA on the dead body, and backtrack. You have to fight 2 Tentacle Commandos; one on the left just behind the door, and the other one behind the door where you fought the Revenant, near the reactor control room. You can now take the door to the right. There is a jumping Imp behind, Security Armor on the side, a downward stairflight, and a Medkit underneath. Then a door leads to the second tunnel-like area of the level. There is a Cacodemon on the right. If you walk towards the Medkit, two additional Cacodemons will teleport in with the "front and behind" pattern. From here, if you backtrack, a new Tentacle Commando may appear atop the stairs of the previous room. While another one is guaranteed behind the exit door, guarding a lift. This one won't break like the previous one. Once on the lower floor, walk a few steps and kill the Imp appearing from the side, then the one behind the door. The next room has a little flight of stairs, with a Medkit nearby and a Tentacle Commando behind the door at the top. The door leads to a small room with a Zombie, Health Station, Armor, and an elevator for Delta Labs Authority. Take it and when you exit it, kill the Demon which appears from your left. Next, kill the Imp behind it. You are now in a circular room, where you can find a Medkit, a small Rocket Box, Stimpack, a locked door and an opened door leading to a curvy corridor, along with the tight Delta Lab Informatized Archives. Kill the 4 Zombies when they awake, then take the Cell Pack, and be ready for the next room. It has four pillars, a Tentacle Commando, and the first Chaingun Commando, who can be viewed as a Machine Gun Z-Sec on steroids in both offense/defense. Rockets are not a waste against these heavy damage dealers. Right after this, another Tentacle-Chaingun Commando couple will come from the exit door. Kill them again, and proceed to the peacefully empty Delta Lab Lobby. The left door is locked, but the front one leads to a microscopic corridor, leading back to the map room, more precisely on a ledge above the data linker. Two Cacodemons are nearby. Kill them, take the Medkit and don't jump,. Instead, enter the next door, take the Large Cell Pack, and continue until you fall down a ledge. You are back at the room where the first Large Rocket Box of the level was.

You can't go back from here right yet, but the level is almost finished (and then you will be able to re-explore it entirely). Open the door. A Revenant will come from afar in front of you, and if you walk a little too far, a Tentacle Commando will run at you from the other door (the one leading to the corridor with the hanged corpse). You have then to go to the two non-operational elevators from the beginning. Two final Chaingun Commandos guard them; one walking towards you, and the other staying near these doors and the entrance to the CPU Complex. Once they are both dead, you can redo the level, without enemies, to take all the ammo, armor, and health you can before reaching the next level. Just notice you'll lose 10 Health Points when you fall down the broken lift.

PDAs

 * Robert Price
 * Brian Mora

Characters

 * Malcolm Betruger (voice only)
 * Thomas Kelly
 * UAC announcer

Enemies

 * Former Humans
 * Commando
 * Chaingun Commando
 * Maintenance Zombie
 * Scientist Zombie
 * Demons
 * Imp
 * Pinky Demon
 * Lost Soul
 * Revenant
 * Cacodemon

Weapons/Items

 * Medkits
 * Shotguns
 * Machine Guns
 * Chainguns
 * Plasma Guns
 * Armor Shards
 * Shells
 * Clips
 * Rockets
 * Plasma Cells
 * Security Armor
 * Armor Shards
 * Backpack
 * Ammo Belts
 * Data Linker

Cabinet Codes

 * Storage Cabinet #21D: Delta Labs - 298