1-2: The Burning World
THE BURNING WORLD
| 1-2: THE BURNING WORLD | |||
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| General | |||
| Layer & Part | LIMBO /// SECOND | ||
| Challenge | Do not pick up any skulls | ||
| Music | A Thousand Greetings #1 A Complete and Utter Destruction of the Senses | ||
| Tip of the Day | |||
Use the ATTRACTOR NAILGUN's magnets to form concentrated orbs of nails that can be moved around using the pull force of other magnets.
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| Collectables | |||
 4 Soul Orbs 1 Blood Orb Attractor Nailgun Alternate Revolvers Slab II
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| Enemies | |||
 28 Filth 17 Strays 5 Schisms 7 Drones 9 Streetcleaners 1 Cerberus Cancerous Rodent Very Cancerous Rodent
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| Rank Requirements | |||
| Rank | Time | Kills | Style |
| S | 04:40 | 62 | 7,000 |
| A | 05:00 | 55 | 6,000 |
| B | 06:00 | 40 | 4,500 |
| C | 08:20 | 30 | 1,500 |
| Levels | |||
| Previous | Next | ||
| 1-1 | 1-3 | ||
1-1, 1-2, 1-3, 1-4 1-S,  1-E
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1-2: THE BURNING WORLD is the second level of Limbo, which introduces the Streetcleaner, unparriable attacks, and the first instance of 
Cerberi as common enemies. 1-2 also houses an encounter with two secret bosses: 
Cancerous Rodent and 
Very Cancerous Rodent.
The music used in this level is A Thousand Greetings for the intro, and A Complete and Utter Destruction of the Senses once the player passes the midpoint of the level.
Level
Start
Starting off the level, the player enters into a large, open room featuring a prominent circular stone tower in the middle. A stone wall lies at the far end of the arena housing a high balcony leading to a door, along with a locked door and a Red Pedestal on the lower floor. A Blue Pedestal is also situated to the left of the entrance. If the player did not collect the 
Nailgun in the previous level, it will spawn here directly in front of the entrance to the level.
Entering into the arena will spawn a large wave of twelve Filth, four Strays, and a Schism. Climbing up the stone platforms by the left side of the arena will spawn three Strays onto the tower, and climbing up onto the stone gazebo that covers the entrance will spawn another group of three Strays.
Upper Castle
Jumping up to the top balcony in the first room leads to a interior hallway, with one main corridor connected by 2 smaller paths to either side. Walking forward will spawn in a set of twelve Filth, with two Drones and four Schisms spawning after the Filth are killed.
Afterwards, the player then enters a small room with a set of stairs leading up to a 
Blue Skull Key and a locked door. Approaching the Skull Key will cause a wave of four Filth, three Drones, and a Stray to spawn in by the nearby stairs.
Picking up the Skull Key will then unlock the door nearby, leading into a hallway with a pile of flaming corpses, acting as a sudden shock with the music cutting out once the player encounters the burning bodies.
The Burning World
The path forward then leads back into the first room of stone corridors through a hole in the side of the wall. Exiting back out to the outdoor region of the level will reveal it now torched ablaze with fires engulfing the foliage and stone buildings and an orange hazy glow filling the skybox. A high-pitched drone begins to play.
Dropping down from the balcony will cause the player to encounter an introduction to the Streetcleaners, nimble, humanoid machines that dodge out of the way of most attacks, deflect projectiles, have a resistance to explosives, and tend to burn anything within their sight with their flamethrowers while chasing the player. However, the fuel tank on their backs can be sniped with a 
Coin Richoshot using the 
Marksman Revolver, and if positioned behind the Streetcleaner, causes the shot to target and detonate the tank, killing them instantly and awarding the + Instakilled style bonus.
Two Streetcleaners will exit from the starting elevator to fight the player. With the Blue Skull Key in hand, placing it onto the pedestal near the entrance will unlock a door into a separate room with a stone courtyard, housing a 
Red Skull Key at the far end of the room. Proceeding towards the skull will trigger a prompt on unparriable attacks, relating to the Streetcleaner's unparriable flamethrower. Three Streetcleaners will suddenly barge out of the walls of the arena to jump the player as they attempt to pick up the Red Skull Key.
Returning back with the Red Skull to the red pedestal by the stone wall will allow the player to unlock the large doors to the first floor.
Lower Castle
Entering inside leads to a large stone room with a shallow pool of water, with the path forward housing an inactive Cerberus statue in front of the door, and a door to the right leading to a room with an optional hidden secret.
As the player enters, A Complete and Utter Destruction of the Senses begins.
Heading through the forward door then leads into the final arena housing the Exit Elevator. Inside lies a small room with a set of stone platforms placed by the side walls. Proceeding forward will then cause a wave of two Streetcleaners and six Strays to spawn in, with the Streetcleaners emerging from a set of pillars in front of the player and the Strays spawning above on the platforms. Killing the Streetcleaners will spawn in two more Streetcleaners along with two Drones. Defeating all the enemies will cause the exit gate to open and unlock the end of the level.
Challenge
For this level's challenge, the player is required to possess the 
Electric Railcannon, 
Jumpstart Nailgun, or 
Jumpstart Sawblade Launcher. The player then must use either of the weapons to activate a shortcut found within the Upper Castle, which can be found by heading underneath a set of stairs in the room with the Blue Skull. Heading through a short tunnel will lead into a small compartment housing a Soul Orb and a set of electrical coils. Firing the Electric Railcannon or the 
cable produced by the 
Jumpstart Nailgun or Jumpstart Sawblade Launcher's alternate fire at them will then cause them to activate, opening a hatch which drops the player into the room before the final arena, skipping the need to collect the Blue and Red Skull Keys. The player then only has to complete the level as usual from this point.
Secrets
| #1 |  Soul Orb - In the first room of the Upper Castle, found through a small tunnel above the corridors by the side passages.
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| #2 | Soul Orb - Underneath the stairs in the room where the Blue Skull is obtained in a small compartment.
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| #3 | Soul Orb - Within a small nook in the room unlocked by the Blue Skull during the  Streetcleaner segment. Can be found behind a set of pillars on the right side of the stone structure.
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| #4 | Blood Orb - In the Lower Castle, found underneath the inactive Cerberus through an opening nearby the stairs. Collecting the orb causes the inactive Cerberus to awaken, fighting the player once they have returned to the arena.
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| #5 | Soul Orb - In the Lower Castle, found in the room through the door to the right of the main path. Inside the room lies the orb situated behind a barrier facing the doorway, with side entrances to the left and right. A pool of lava sits underneath the barrier, requiring the player to enter the narrow gap by sliding down the wall or dashing through.
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Secret Boss Encounter
Found within the small room housing the pool of lava inside the Lower Castle region lies a small cracked piece of the wall, situated to the left of the doorway. The player can destroy it with an explosive in order to access a hidden area outside the prior room.
Inside lies a large, empty room filled with a shallow pool of water around the floor. Heading around the tunnel created by the corridor reveals a hidden compartment to the right of the player, blocked off by a barrier. Continuing past the opening leads to a large crack in the wall, which the player can break with another explosive, leading to a set of stone hallways and corridors.
Moving through the hallways will eventually lead the player to a door at the end of the hallway, bathed in green light. Approaching near the door will cause it to suddenly break apart, revealing the Cancerous Rodent.
The Cancerous Rodent is a tiny, glowing collection of roughly 15 polygons vaguely arranged in the shape of a mouse, which slowly moves toward the player. The Cancerous Rodent has no other attacks at all, and hitting it once will immediately kill it.
After the player unceremoniously kills the Cancerous Rodent and returns back to the hallway, the player will then encounter the Very Cancerous Rodent standing outside of the opening. The Very Cancerous Rodent is a much larger version of the Cancerous Rodent, which sends out a small burst of small homing green 
Hell Seekers at the player, which explodes on contact. While now posing a threat, the Very Cancerous Rodent is quite easy to deal with, as its only attack is slow and easy to dodge, and it will also occasionally damage itself with the explosion. Any weapon can be used to kill it effectively, with 
Sawblade Traps, 
Shotgun Swapping, and ground slamming being able to deal significant damage quickly.
Slab II
Killing the Very Cancerous Rodent will then unlock a compartment nearby the opening, housing the second Slab required to unlock the 
Alternate Revolver.
Hidden through each of the levels in Limbo lies a set of stone slab buttons, which are revealed after finding hidden secrets or completing optional challenges. Collecting all four slabs grants the player an unlockable variant to their 
Revolver in 1-4: CLAIR DE LUNE, the Alternate Revolver or the "Slab" Revolver.
Pressing the Slab will cause it to light up and activate, before a prompt then appears below:
Gallery
The start of the level
Corridors
The Blue Skull room
The Burning Hallway
The start, now burning
The Red Skull courtyard
The Red Skull shot from behind the broken screen wall
Inside the Flooded Castle
The Lava Room
The sewer entrance
Dungeon
The formidable Cancerous Rodent
The Very Cancerous Rodent blocking the path
The final arena
Trivia
- The title of the level is a reference to The Burning World, an album by Swans.
- The models used for the burning bodies are identical to the old models of the Strays and Schisms.
- If the player enters the first burning hallway before all the enemies in the previous room are killed, distorted, strange audio begins playing. This ambiance is referred to as "KidsplayingCursed2.ogg" in the game's files, and appears to be an altered audio clip of playing children.
