A hatch, leading to Mines
Mines is a new environment added in Antibirth.
Treasure rooms in the Mines always have two items to choose from.
After "A Secret Exit" is unlocked, a boarded door to the Mines will appear upon completing The Caves, Catacombs, or Downpour. The boarded door requires two bombs to enter.
Monsters
| Monsters | Description |
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Bosses
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| Tuff Twins | Great Gideon | Hornfel |
Knife Piece
Mines II contains Knife Piece 2, one of three pieces necessary to enter the Corpse.
Somewhere on the floor, there will be a room containing four buttons. Next to each button is 1 to 4 small pebbles, indicating the order in which to press them. After pressing the four buttons, Knife Piece 2 will appear in the center of the room.
Music
The track that plays in the Mines is titled Fault Lines.
 Chapters
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|---|---|---|---|---|---|---|---|---|
| Chapter 1 | Chapter 2 | Chapter 3 | Chapter 4 | |||||
 Downpour |
 Mines |
 Mausoleum |
 Corpse | |||||
 Bosses
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 Challenges
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 Chapters
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 Characters
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 Items
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 Monsters
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 Objects
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 Pickups
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 Trinkets
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 Unlockables
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