Encounter map
Where to find Mom's Heart
Set encounterThis fight is reached on the Womb II route. It is a set encounter, so it does not appear in the random floor boss pools.
Compare the next routesFight guide · Womb II / Utero II
How to fight Mom's Heart
The Womb finale alternates between exposed projectile patterns and periods with summoned enemies.
Before entering
Save enough health for a boss that can retreat between damage windows. The encounter is replaced by It Lives! after repeated victories.
- 1
Eyes and opening
Watch for: Two Eyes begin beside the Heart, and replacements appear as it retreats upward.
Try: Clear the Eyes while keeping the diagonal shots from the retreat in view.
- 2
Enemy waves
Watch for: The Heart can leave the screen and summon monsters before it descends again.
Try: Clear the wave to reopen a reliable attack window, then step away from the Heart's next projectile pattern.
- 3
Final laser pattern
Watch for: At low health, rotating diagonal Brimstone beams replace the earlier attacks.
Try: Move with the open space between beams instead of crossing a laser at close range.
Completion mark
Mom's Heart character rewards
Defeating Mom's Heart records the Mom's Heart / It Lives! mark for the character you are playing. The direct rewards for this mark require a Hard clear. The reviewed list has 15 direct reward entries tied to this completion target. These are achievement unlocks, not items dropped by the boss.
Multi-mark and roster-wide achievements appear in the completion tracker.
Game-file referenceRaw data and official artEntity fields, portrait files, and source notes for this boss.
Raw entity values
Health and entity data
- Base HP
- 950
- Stage HP scaling value
- 0
- Entity ID and variant
- 78.0
- Contact damage field
- 0
These are raw entity fields. Armor, floor scaling, phase transitions, shared health, and scripted waves can make the fight differ from the base HP value.
Asset mapping
Official portrait assets
The Mom's Heart versus-screen portrait comes from the supplied game art. The original filenames are retained below.
- Portrait file
- Portrait_78.0_MomsHeart.png
- Boss-name image file
- BossName_78.0_MomsHeart.png
Source notes
How this record is built
Boss identity and portrait metadata come from bossportraits.xml. Random floor membership, weights, and Double Trouble room IDs come from bosspools.xml. Health and entity fields come from entities2.xml. Fixed story locations and route explanations are reviewed editorial context.