Lazarus Labs

The Lazarus Labs is the ninth level of Doom (2016). It is the center of Hell studies at the UAC Mars Base, a location where experiments were carried out on captured demons and where most of the artifacts taken from Hell, including the Helix Stone, were stored. Olivia Pierce, as Head of Biomechanical Research, had sole oversight over all projects undertaken in the Lazarus Labs. The ninth mission, also simply called Lazarus, takes place here.

"You are at the heart of the UAC occult - the Lazarus Labs. This is where Olivia released the demons from their cells and activated the Lazarus Wave, turning UAC personnel into the unwilling Possessed. You're in search of her private offices where the Helix Stone is stored. Unlock the secrets of this sacred artifact to find out how to shut down the Well - the Argent Tower's energy source in Hell."

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Description
The Lazarus Labs are a sub-division of the Advanced Research Complex accessible only to those with the highest clearance level. It is an underground complex with high security, preventing both infiltration by outsiders and exfiltration of information from insiders. Members of the UAC working in the Lazarus Labs are stated to be highly secretive, and little information is available to outsiders of what goes on within the facility. All anomalies and artifacts from other dimensions are sent immediately to the Lazarus Labs for research, and will generally remain there. Promotion to the Lazarus Labs is considered a great honor, even though those being promoted do not understand in advance what they will be doing there.

Mission 09: Lazarus
To find information on closing down the Well, the Doom marine proceeds down to the Lazarus Labs in search of the Helix Stone, kept inside Olivia Pierce's private archive. Activating the stone triggers a psychic vision relating to a demonic artifact which Samuel Hayden identifies as the Crucible; VEGA confirms that it is located in an uncharted region of the Titan's Realm, but getting there requires rupturing another Argent accumulator to create a portal and the only remaining accumulator is stored in "Specimen CD587". Samuel is apparently amused by this revelation and states that the marine will have to "remove" the accumulator. The marine fights his way through the lower levels of the facility until he discovers the Lazarus Project's most dangerous creation - a heavily-armed Baalgar demon known as the "cyberdemon", which is powered by the accumulator that the marine needs. After ripping out the accumulator and using it to transport himself into Hell, the marine finishes off the cyberdemon and proceeds to the Titan's Realm.

Objectives

 * Shut down the portal
 * Access the Helix Stone
 * RECLAIM THE CRUCIBLE

Lazarus facility
Once the elevator reaches its destination, step out and use the health station in front of you if necessary then go through the door next to it to see an echo recording. Head through the next door and collect a box of siphon grenades then drop down the elevator shaft in front of you to reach the floor below where possessed scientists are waiting along with other enemies. Follow the passage to another elevator shaft with an imp corpse stuck inside it and pull the legs out to raise the elevator and allow some more imps to climb out of the hole, then drop into the hole yourself and pull the vent covering away to reveal a small tunnel leading down to an arena. Kill the imps, scientists and revenant waiting in this area then attack the gore nest to attract lots more imps along with revenants, possessed soldiers and a mancubus; use the Haste powerup above the suspended block in this arena to boost your firing speed for a short time. Once the arena is clear a door will open and release some more scientists; go through that door and kill an imp waiting behind a narrow doorway then climb up to a maintenance door leading to a curved bridge.

Follow the bridge to another maintenance door with a combat support drone and a box of holograms behind it, then climb through the ceiling hole above you and head through two more doors to a curved passage containing scientists. Follow the passage round and kill two soldiers and a Hell knight that burst through a door ahead, then head up the stairs behind this door and continue on to a curved tunnel with more possessed enemies to kill. Go through the door at the end of the tunnel and push past some soldiers to a medical bay, then continue on to a passage with a floor hatch that leads down to another arena containing imps and soldiers followed by mancubi and knights; use the quad damage powerup in this arena to help you. Once all the enemies are killed, head down either of the green-lit staircases near the dissection table and follow the tunnels to a split door that you must squeeze through. Behind this door is a hall with scientists that will be joined by pinkies, and once they are dead you will have to contend with more pinkies as well as imps. Once the hall is clear, press the panel next to the door at the opposite end of the hall to open it and reveal an elevator leading down to Olivia's archives.

Olivia's archive
Step out of the elevator and head forward to the Helix Stone chamber, which is protected by a forcefield. Go up the stairs and follow the trail of armor shards to a curved desk with a computer panel that will unlock the door to Olivia's office behind you, then go inside and use the panel by the hologram of the Slayer's sarcophagus to lift the security lockouts. Go back to the Helix Stone and use the panel underneath it to activate the artifact and trigger a cutscene; once this ends you will have to fight off a contingent of imps joined by a knight, a mancubus and a cacodemon. Killing all the enemies will reveal a curved staircase under the stone; go down it to an unholy chapel with soldiers then head down a tunnel leading to a circular corpse disposal area. Head round the walkway to a panel that will lower a maintenance hatch, then climb on the hatch as it descends and let it carry you up to an overhead vent which you can follow to a maintenance door.

Open the door and kill the possessed enemies behind it then turn right and head into a tunnel with some armor shards as well as a couple of scientists. Follow the path to a security station and use it to close the large portal in front of you, then go through the doors behind you to an employee lounge guarded by the possessed as well as some imps. Drop down to the floor below to find a small doorway marked "EXIT" and go through it to find a tunnel leading down to a circular pit; drop into the pit then turn right and follow the wide passage in front of you to a blue portal which will take you to the arena on the floor above, where you will face a multitude of imps along with soldiers and several other species of demon. Use the Haste and quad damage pickups in the arena to even the odds, and once all the enemies are dead look for a large gate that opens at the back of the arena. Jump over the railing and enter the circular elevator in front of you; once it reaches its destination, grab the supplies in front of you and open the large door ahead to confront the cyberdemon.

Cyberdemon
The cyberdemon is capable of launching rapid-fire rockets from the launcher attached to its left arm, as well as launching a cluster of missiles from its back that will fall on the arena after a few seconds - use the glowing circles on the floor to anticipate where they will land. The arm launcher can also be used to fire an energy beam; this takes a few seconds to charge and the cyberdemon tries to anticipate where you will go, so move away at the last second to throw off its aim. The cyberdemon can also dash at your position, and stomp its foot to create a shockwave if you get too close. Fire all of your heaviest weapons into the cyberdemon starting with the BFG-9000; the cyberdemon will periodically drop more ammo as it loses health. Once its health bar is depleted, perform a glory kill on the demon to pull out its Argent accumulator and transport yourself into Hell.

A burst of lightning will now recharge the cyberdemon and you will have to deplete its health bar for a second time. The cyberdemon retains its previous attacks but can now trap you between two stone walls before throwing energy waves from the blade attached to its right arm; these waves always follow a low-high-low pattern so make sure you jump the first and last waves while crouching the second. The cyberdemon can also throw energy waves when out in the open, in which case you may be able to sidestep the waves instead. Once the cyberdemon runs out of health, approach it and perform another glory kill to finish it off. Once the cyberdemon is dead, head through the large gate that opens and step on the red teleporter behind it to finish the level.

Challenges

 * Variety is the Spice of Death II
 * Perform five different glory kills on possessed soldiers. Possessed security and Hell razers count towards this challenge as well; approach enemies from different angles, including from above, to trigger different glory kills.


 * Thread the Needle
 * Kill eight demons with a single shot. The BFG-9000 will easily complete this challenge if fired into an area full of enemies.


 * Time Well Spent
 * Play a game of Demon Destruction. This game can be found on a computer in Olivia's office.

Classic level
When you reach the corpse disposal room past the chapel, go down the stairs and look behind the pillar on your right to see a lever; pull it then drop down the hole in the middle of the room to find that one of the walls has opened revealing the starting area of Doom's, though there is nothing to interact with here.

Special items
Opposite the desk holding the third datapad (see the "Other items" section below) is a vent covering that you can punch out. Drop down the vent behind it to find a tunnel leading to the automap station.

When you reach the second elevator shaft (which is blocked by an imp corpse), walk between the nearby boxes to find a vent opening that leads up to a secret mega health pickup. It will give you an advantage in the arena below.

Trivia

 * The name Lazarus is taken from a story in the Bible which describes the death of Lazarus of Bethany and his subsequent miraculous resurrection by Jesus. The use of this name by the UAC is thus sacrilegious and a crude mockery of its scriptural origins, considering that a chief focus of the Lazarus Project is the reanimation of dead demons.