Solomon's Baby
AchievementRepentanceUnlock unknown
Achievement details
- Achievement number
- 438
- Description
- Beat everything in Hard mode with Jacob and Esau.
- Requirement
- Earn all Hard mode Completion Marks as Jacob and Esau
How do you unlock Solomon's Baby?
In The Binding of Isaac, Solomon's Baby is unlocked by earning every hard-mode completion mark as Jacob & Esau.
Structured pathSource-backed requirements are mapped into trackable steps.
Beat everything in Hard mode with Jacob and Esau.
See the full unlock path for Solomon's Baby — 15 steps- All of
- Defeat Satan 5 times to unlock The Negative. source
- The Negative is a guaranteed drop from Mom; take it, then defeat Satan in Sheol and touch the chest to enter Dark Room. source
- Find and defeat The Lamb in Dark Room. source
- ??? or The Lamb must be defeated once for the Golden Gate to spawn. source
- Open the Golden Gate by combining Key Piece 1 and Key Piece 2 into the Golden Key, or by using Dad's Key or another gate-opening effect. source
- Reach the starting room of Chest or Dark Room, pass through the Golden Gate, and defeat Mega Satan. source
- Defeat Mom's Heart for the 10th time to unlock Blue Womb. source
- Defeat Mom's Heart or It Lives! within 30 minutes and enter the door to Blue Womb. source
- Defeat Hush in Blue Womb. source
- Defeat Hush to unlock The Void. source
- A Void portal can appear after a major boss; defeating Hush guarantees one. source
- Defeat Delirium, the main boss of The Void. source
- Defeat Hush 3 times to unlock A Secret Exit. source
- After A Secret Exit is unlocked, a locked door to Downpour appears after completing Basement/Cellar/Burning Basement I or II. source
- Collect Knife Piece 1 in Downpour/Dross II. source
- Collect Knife Piece 2 in Mines/Ashpit II. source
- After defeating Mom in Mausoleum/Gehenna II, stab the flesh door that appears with the knife familiar to open it. source
- Defeat the Mausoleum version of Mom's Heart behind the flesh door, then reach Corpse II and defeat Mother. source
- A Strange Door is unlocked by beating Mother for the first time. source
- Take The Polaroid or The Negative after Mom, escape the boss room, then use it to open A Strange Door. source
- Find Dad's Note, complete the Ascent to Home, then defeat Dogma, the Ultra Harbingers, and The Beast. source
What unlocking Solomon's Baby leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13