Mausoleum



Mausoleum is a new environment added in Antibirth. It contains many necrotic-themed and psychic-themed enemies, as well as teleporters that can connect different parts of the same room or two different rooms. The Mausoleum is almost always segmented into two main areas. The primary area, where Isaac enters, contains a standard set of rooms along with a special teleporter room. The teleporter room requires Isaac to expend resources or maneuver through obstacles to reach a teleporter, which transports Isaac to the secondary area. The secondary area contains a few rewards, along with additional random special rooms.

Treasure rooms in the Mausoleum always have two items to choose from.

After "A Secret Exit" is unlocked, a locked door to the Mausoleum will appear upon completing The Depths, Necropolis, or Mines. The locked door requires two soul hearts, immortal, or black hearts to enter. The door will always take soul hearts before it takes black hearts, and black hearts before it takes immortal. If playing as Bethany, the door will instead take 4 charges from her counter, and if playing as The Lost, it is free to enter.

Rebirth Monsters

 * Bony
 * Wizoob
 * Lil' Haunt
 * Fat Sack
 * Gaper (rare)
 * Rotty
 * Stone Grimace
 * Psychic Maw
 * Knight
 * Selfless Knight
 * Floating Knight

Knife Piece

 * Mausoleum II contains Knife Piece 3, one of three pieces necessary to enter the Corpse.


 * Somewhere in the primary area of the floor, there will be a room containing many fireplaces. In the secondary area of the floor, there will be a room containing active and inactive teleporters in the same formation as the fireplaces. To acquire Knife Piece 3, put out the fires in the fireplace room that correspond with the inactive teleporters.


 * Try to not take Abel or Lil' Dumpy as these familiars might put out fires that should stay active.

Music

 * The track that plays in the Mausoleum is titled Machine In The Walls.