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Binding of Isaac Achievement: The Cellar
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Binding of Isaac Wiki / Achievements / The Cellar

Binding of Isaac Achievement: The Cellar

Achievement
Description Alt stage to the basement.
Unlock Beat all The Basement bosses (not restricted to beating bosses in the Basement)
In-Game Secret Number 86
Platforms
All
DLC Required
None
Achievement Description
Lucky Rock
The Catacombs
Cain's Other Eye
  • Description: Unlocked a new item.
  • Unlock: Complete the Boss Rush as Cain
  • In-Game Secret Number: 110
Cain's Other Eye
Abaddon
  • Description: Unlocked a new item.
  • Unlock: Defeat ??? as Azazel
  • In-Game Secret Number: 128
Abaddon
Begotten Baby
  • Description: Unlocked a new co-player baby.
  • Unlock: Removed in Afterbirth+: Defeat Mom's Heart on hard mode as Lazarus
    Added in Afterbirth+: Defeat Mom's Heart on hard mode as Azazel
  • In-Game Secret Number: 173
Begotten Baby
???'s Soul
  • Description: Unlocked a new item.
  • Unlock: Defeat The Lamb as ???
  • In-Game Secret Number: 73
???'s Soul
Maggy's Bow
  • Description: Unlocked a new item.
  • Unlock: Complete the Boss Rush as Magdalene
  • In-Game Secret Number: 109
Maggy's Bow
Fighting Baby
  • Description: Unlocked a new co-player baby.
  • Unlock: Defeat Mom's Heart on hard mode as Samson
  • In-Game Secret Number: 177
Fighting Baby
Store Upgrade lv.4
  • Description: Donated 600 pennies to the shop.
  • Unlock: Donate 600 coins to the Donation Machine
  • In-Game Secret Number: 154
Store Upgrade lv.4
The Razor
  • Description: Unlocked a new item.
  • Unlock: Defeat Satan as Eve
  • In-Game Secret Number: 44
The Razor
The Real Platinum God
  • Description: 111% now stop playing!
  • Unlock: Collect every item and unlock every ending.
  • In-Game Secret Number: 84
The Real Platinum God
Wire Coat Hanger
  • Description: Unlocked a new item.
  • Unlock: Defeat Mom's Heart 4 times
  • In-Game Secret Number: 139
Wire Coat Hanger
Isaac's Tears
  • Description: Unlocked a new item.
  • Unlock: Defeat Isaac as Isaac
  • In-Game Secret Number: 106
Isaac's Tears
Celtic Cross
  • Description: Unlocked a new item.
  • Unlock: Defeat ??? as Magdalene
  • In-Game Secret Number: 50
Celtic Cross
Godhead
  • Description: Unlocked a new item.
  • Unlock: Removed in Afterbirth: Beat Mom's Heart, Isaac, Satan, ???, and The Lamb and complete the Boss Rushon hard mode as The Lost
    Added in Afterbirth: Earn all 9 Completion Marks on hard mode as The Lost
  • In-Game Secret Number: 156
Godhead
Glass Cannon
  • Description: Unlocked Challenge #11.
  • Unlock: Beat challenge #19 and defeat Lokii for the 1st time
  • In-Game Secret Number: 164
Glass Cannon
Lazarus' Rags
  • Description: Unlocked a new item.
  • Unlock: Defeat Isaac as Lazarus
  • In-Game Secret Number: 116
Lazarus' Rags
Little Gish
  • Description: Unlocked a new item.
  • Unlock: Defeat Gish for the 1st time
  • In-Game Secret Number: 23
Little Gish
Little Baggy
  • Description: Unlocked a new item.
  • Unlock: Collect 2 of either Roid Rage, The Virus, Growth Hormones, Experimental Treatment or Speed Ball
  • In-Game Secret Number: 146
Little Baggy
Demo Man
  • Description: Unlocked Challenge #9.
  • Unlock: Defeat Mom's Heart 9 times
  • In-Game Secret Number: 162
Demo Man
Guillotine
  • Description: Unlocked a new item.
  • Unlock: Defeat Isaac as Judas
  • In-Game Secret Number: 107
Guillotine
Blood Bag
  • Description: Unlocked a new item.
  • Unlock: Use the Blood Donation Machine 30 times
  • In-Game Secret Number: 147
Blood Bag
Butter Bean
  • Description: Unlocked a new item.
  • Unlock: Destroy 100 poops
  • In-Game Secret Number: 145
Butter Bean
Technology .5
  • Description: Unlocked a new item.
  • Unlock: Complete challenge #18
  • In-Game Secret Number: 104
Technology .5
Eve
  • Description: Unlocked a new character.
  • Unlock: Don't pick up any hearts for 2 floors in a row
  • In-Game Secret Number: 42
Eve
The Negative
  • Description: Unlocked a new item.
  • Unlock: Defeat Satan 5 times
  • In-Game Secret Number: 78
The Negative
Guppy's Hairball
  • Description: Unlocked a new item.
  • Unlock: Become Guppy
  • In-Game Secret Number: 65
Guppy's Hairball
Rune of Algiz
  • Description: Unlocked a new item.
  • Unlock: Complete challenge #8
  • In-Game Secret Number: 96
Rune of Algiz
The Catacombs
  • Description: Alt stage to the caves.
  • Unlock: Beat all The Caves bosses (not restricted to beating bosses in the Caves)
  • In-Game Secret Number: 87
The Catacombs
Store Credit
  • Description: Unlocked a new item.
  • Unlock: Defeat ??? as Lazarus
  • In-Game Secret Number: 118
Store Credit
A Bag of Pennies
  • Description: Unlocked a new item.
  • Unlock: Defeat Isaac as Cain
  • In-Game Secret Number: 21
A Bag of Pennies
The Book of Revelations
  • Description: Unlocked a new item.
  • Unlock: Defeat a Harbinger for the 1st time
  • In-Game Secret Number: 7
The Book of Revelations
DLC Required
Added in Afterbirth Added in Afterbirth+ None
Achievement Description
Platforms
All