Kadingir Sanctum

The Kadingir Sanctum, also referred to as the Blood Keep, is the sixth level of Doom (2016). It is the first area of Hell which is visited in the game after Olivia Pierce uses an Argent accumulator to rip open a permanent portal to the demons' dimension at the Argent Energy Tower. The Doom marine is pulled into the rift shortly after her, and ends up near the place he was imprisoned by the demons and subsequently found by the UAC. The sixth mission, Into the Fire, takes place here. A barren landscape of craggy rocks and deep caverns is punctuated by portals which require skull keys to be opened.

"The Hell portal is now open back on Mars. Lost in the Hell dimension, you are unable to stop the demons from absorbing our world. Kill everything you see and find a way back to Mars."

- Loading description

Description
Kadingir Sanctum is an array of tunnels, catacombs, and temples connecting the Umbral Plains to the Great Steppe. It is referred to as a place of both worship and vilification - both the heroes and the enemies of Hell can be found entombed within this region.

Many important artifacts were discovered and returned to Mars via Project Lazarus Manned Expedition 2145/128. All human life was lost in the recovery of these artifacts, and the records were then sealed, with the artifacts being spirited away quickly to the top-secret Lazarus Labs. The records concerning these artifacts, and the artifacts themselves, disappeared shortly afterwards and are presumed lost.

Mission 06: Into the Fire
After being pulled into the Hell portal created by Olivia Pierce, the Doom marine must find a way back to Mars in order to close the portal and stop Hell's armies coming through. Realising he has been deposited near the place where he was entombed, the Doom marine heads to that location; on the way, he finds monoliths detailing his crusade through Hell and echo recordings of a journey made by Samuel Hayden into Hell. Eventually the marine reaches the chamber where his sarcophagus was stored and sees a recording of Hayden examining it; he then activates a portal leading back to Mars.

Objectives

 * Kill Olivia Pierce
 * Get back to Mars
 * Find the exit portal marked by the UAC

Essentials
Follow the path to a skull switch and push it to open the gate, then head forward until you see an echo recording of Samuel Hayden and some UAC soldiers; they will mention a portal device at "the Tomb". Turn left and head down a slope before jumping down to a ledge with some Unwilling, then jump to a ledge behind you to find a Gauss cannon sitting on a UAC box. Go up the staircase behind you to confront imps along with a Hell razer, a Hell knight and a revenant then look for a partially-eaten demon corpse; there is a slope nearby leading down to an arena with more of the same opponents as well as mancubi. Once the arena is clear a gate will open nearby; follow the objective marker to a skull switch and press it to open a second gate that you can see through the window, then go through it to find the yellow skull. Backtrack to the area with the demon corpse and climb up a staircase leading to the yellow door, then use the skull to open it and reveal an elite guard along with a monolith that reveals more information about the Doom marine.

Head up the slope to get back outside and dispose of some imps and Unwilling, then drop into an arena with a T-shaped bridge where you will face knights and summoners. Once the arena is clear, head along the bridge and go through an open door to find yourself above the pit where you encountered the first group of Unwilling; some platforms will rise and allow you to climb up to a skull switch, which will open a wooden door that you can see below. Jump down to the door and kill the Unwilling waiting behind it, then step into a green teleporter to be transported to a passage containing the blue skull; pick it up to open a gate leading back to the demon corpse you saw earlier. Kill the imps that teleport in then go back down to the arena where you found the yellow skull, where a quad damage powerup has appeared along with a cacodemon; keep your distance to avoid its projectiles, then dispose of the knights and revenants that follow it. Once the arena has been cleared, climb up to the blue door and use the skull to open it then follow the tunnel until you get to a walkway guarded by Unwilling and a mancubus.

Press on to a plateau that is guarded by imps as well as lost souls; shoot them down before they charge at you and explode, then deal with the mancubus that tries to ambush you from behind. Turn right and walk to an outcrop then jump across to a floating platform where you will face more lost souls and a razer, then climb up to the razer's ledge to find a short tunnel leading upwards through a large rock structure. When you get back outside, kill two approaching cacodemons then jump across some more floating platforms to a skull switch that will open a large gate just behind it. Go through the gate to a blood pit guarded by imps, lost souls and razers followed by knights and revenants; there is a Haste powerup in a tunnel on the bottom floor that may be useful to you. Once the pit is clear of demons, climb up to the top floor and head up a curved staircase to find a combat support drone then turn right and head down to a temple entrance under a large skull; you will see another echo recording as you enter. Head through the next door and go up the slope on your right to find a baron of Hell fighting with some knights and Unwilling; kill the baron before it notices you, then turn your attention to a summoner and a second baron that enter the fray, followed by lost souls and a third baron - there is a quad damage powerup in the area that you can use to help you.

Once all the enemies are killed, head through the large door near where the summoner appeared and go down a bone-lined slope to kill some Unwilling and lost souls, then head up a staircase and look left to see a mancubus and revenants below that you can snipe with the Gauss cannon. Jump down to their platform and look left to slay two approaching cacodemons, then carefully cross over to the staircase they appeared at before continuing onwards and upwards past some Unwilling to find another monolith. Turn right at this point and head up to find some imps and Unwilling fighting each other, then push past them and follow the green light poles to a doorway with a tunnel behind it. Follow the tunnel until you get back outside then jump down some chained platforms to reach the final arena, which initially contains imps, razers and knights followed by revenants, mancubi and two barons. After all the demons have been killed, go up to the very top of the arena to find the entrance to the Doom marine's tomb and step inside it to see another echo recording; once this ends, use the computer panel to activate a portal back to Mars and automatically finish the level.

Challenges

 * Dead Man Stalking
 * Earn four Praetor tokens. Refer to the "Other items" section below for information on finding the elite guards.


 * Momentum Swing
 * Kill ten demons while using power-ups.


 * Sweep the Leg
 * Perform four "Leg Sweep" glory kills on the Hell razer (attack right leg). Attacking from the razer's right side while aiming at the right leg is recommended.

Classic level
After clearing the first baron encounter, you will see a small dark cavern; enter this cavern to find a lever and pull it, then go back down to the floor below and enter a large bloody trench; you will see that a wall next to an archway has opened revealing the middle "finger" from Doom's. Press the two skull buttons at the end of the passage to reveal a supercharge (which is actually a mega health pickup) and a plasma rifle.

Special items
After reaching the large blood pit and killing all the enemies, a mancubus will burst through a wooden door on the top floor. The automap station can be found behind this door.

After climbing up a staircase near the start to deal with some imps, look left and climb up some stepped rocks to reach a secret chestplate pickup.

When you get to the plateau with the first lost souls, a mancubus will jump up from a ledge below to ambush you from behind. At one end of this ledge is an invulnerability powerup, and at the other end is a small yellow-lit cavern containing a secret chaingun as well as a skull wearing Commander Keen's helmet.

Secret prophecies
Near the third Slayer's Testament rune, a whispering voice can be heard seemingly emanating from a nearby tree. This low, distorted, almost unintelligible voice speaks four different prophecies:
 * "Could he be demon kin, spawned from the loin of a grotesque infidel? Yet, the seal of the heretic binds him. His origin is as dark as his coming."
 * "The power held within the Crucible will punish man-born and demon kin alike. It will crush the divide. It will corrupt all realms. It will create the monster. It must never be found."
 * "Yet even as the Doom Slayer revels in the spoils of his war, another shall rise from the fires: a dark priest consumed by the Crucible. And even the Doom Slayer shall weep in his shadow."
 * "The heretic-turned-apostle Olivia, birthed of the dawn of our resurrection, by her hand we cross the divide. And for her tribute, she shall be granted the form of the Dread Widow."

Trivia

 * The location in or near Kadingir where the Doom marine was imprisoned is called the Blood Keep. This location shares its name with from Doom 64.
 * The final arena of this level is additionally designed after the beginning area of, also from Doom 64. Similarities include the Stonehenge-like pillar layout with overlapping crossbars at different vertical levels, and the nature of the battle which takes place there as well - enemies continue to appear in shortly spread-out waves which increase in strength by varying the type of monster, starting with imps and culminating with barons of Hell. Other similarities not confirmed by the map's author include the color of the sky in both areas, and the relative positions of their exits compared to the temple structure.
 * The name Kadingir Sanctum could be a reference to the Sumerian name of the city of Babylon, KÁ.DINGIR.RAKI, meaning "Gate of God."
 * The room containing the second Slayer's Testament has a wall with a demonic face and a pentagram. This is reminiscent of the texture from the original Doom games.
 * By the lever that opens the classic level area, sitting behind a stalagmite, is a corpse wearing a horned helmet with an arrow in its right knee. This is a reference to a meme introduced by .