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Operation Mom's Bra!

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Operation Mom's Bra is essentially my effort to calculate the health of all the enemies and bosses in the game. It will require a lot of patience, Cheat Engine and the ability to repeatedly stomach one of the most disturbing images in the game (anyone who's used Mom's Bra knows what I'm talking about). How it works is as follows:

  • First you need to set up Cheat Engine (tutorial on how to find and use it here ).
  • Once you've got it, start the game as Isaac and use Cheat Engine to give yourself Mom's Bra with infinite item power.
  • Additional recommended items to get would be the Compass, Treasure Map, Pyro and infinite bombs.
  • Every time you enter a new room with enemies/bosses, spam Mom's Bra to keep them frozen.
  • If we already know how much HP the enemies have, just blow them up, take them down or bomb your way out of the room.
  • If we don't know how much HP one of the enemies have, carefully count how many tears it takes to kill that enemy (which shouldn't be so difficult since Mom's Bra keeps them frozen) and record it. 
  • From my experience, Mom's Bra keeps the enemies frozen more than long enough for you to fire 10 tears at them. 
  • BE CAREFUL ABOUT WHAT ITEMS YOU PICK UP. Do NOT pick up any damage upgrades, tears upgrades, or what could possibly be a damage or tears upgrade (e.g. other stats up items). As a general rule of thumb, don't pick up any items at all.
  • Beware that you might accidentally unlock new secrets/items when you're doing this (e.g. a No Damage Achievement).


I've already done an Operation Mom's Bra run, so most of the health of the enemies (and quite a lot of the bosses) have already been recorded.


Enemies:

Enemy

Number of hits required

Additional Info, guesses

Spiders

2

Trites

5

F. Gapers/Gushers/Pacers

3

I'm guessing gapers take 3 hits

Clotties

5

Sacks/Walking Sacks/W. Boils

6

I’m guessing all nubs take 6 hits

Double Spiders

6

Black flies

1

Red flies

2

Fat flies

4

Gurgles

12

Keepers

11

B. Lickers

6

Angry eternal fly

6

Hives

6

Chargers

6

Globins/ Crack Globins

10, 3 in ooze state

Mr. Maws

8

Maws

6

Mask+Heart hearts

12

Hangers

12

Leapers

8

Pooters

3

Brains

6

Knights

6

Selfless Knights

8

Guts

8

Vis/Double Vis

8

Eyes

6

Babies

8

Parabites

11

Leeches

8

Spits

3

I'm guessing the similar Suckers take 3 hits to kill as well.

Fred

6

Mama Guts

23

Bloodshot eyes

8

Lumps

9

Holy Leeches

9





Bosses:

Boss

Number of hits

Additional info, guesses

Widow

38

Took 15 hits if you give yourself Sacred Heart

Duke of Flies

32-33

Blastocyst Embryos

4

Pin

46

The Husk

41

The Fallen

103 total (probably 100)

The Bloat/Green Bloat

129

Greed

49

I got Greed twice, first in the Necropolis 2 and then in the Chest. I'm pretty sure the Necropolis 2 Greed took 35 hits to kill, so it's possible that the HP of Sins increases the further you go in the game.

Larry Head/Green Larry Head

14

Larry Body/Green Larry Body

7

Chub

101 (probably 100)

I'm guessing that Chub's HP is probably 100 Isaac tears, but the game's code doesn't kill the enemy when its HP is exactly 0 (that is, its HP has to be negative for the enemy to be dead). This also goes for Loki and the Fallen

Blue Mom

158 (through foot)

Fistula large

18

Fistula medium

5

Fistula small

3

Loki 2

51 per half

Monstro

72

It Lives

About 320

Loki

101 (probably 100)

Blue Gemini

51 for both

Isaac

About 562

To all who are reading this, verify this number at your own risk.

Daddy Long Legs

87

Gurdy/Champion Gurdy

171

Lust

49

Wrath

77

Super Greed

91

???

About 594

See the row for Isaac

Pestilence

81

Black War

169

War

133

Carrion Queen

About 51

Gluttony

49

Blue Chub

127






This list is pretty close to completion already, but there's a few bosses and monsters left out (and the HPs I've recorded are approximations in a few places). Anyone who wants to participate in Operation Mom's Bra and help complete this list is free to do so!




Enemies I've not recorded yet:

Double Flies, Gapers, Guts, Walking guts, Boils, Boom Flies, Red Boom Flies, Suckers, Mulligans, Mulligoons, Mullibooms, Swarmers, Hoppers, Flaming Hoppers, Horfs, Red Maws, Psychic Maws, I.Blobs, Spities, Blind Maggots, MemBrains, Kamikaze Leeches, Hosts, Red Hosts, Chubbers, Evil Twins, Angelic Babies

Note: the bold, italic names are the enemies for whom I haven't recorded the HP of any similar enemy (e.g. I've already recorded the HP of Maws so the Red Maws are not bold and italic)

Bosses I've not recorded yet:

Normal Mom (although I know she takes 72 hits if you just give yourself Sacred Heart), Normal Gemini, Famine, Steven, Blighted Ovum, Gurdy Jr., Peep (although I know he takes 50 hits if you just give yourself Sacred Heart), The Hollow, The Wretched, Monstro 2 (although I know his red champion takes 68 hits if you just give yourself Sacred Heart), Gish, Mask of Infamy, Scolex, Blastocyst, Death, Conquest, Teratoma, Satan, Krampus, the Headless Horseman and a LOT of Sins

Also there's a lot of champions, C.H.A.D. (who takes 39 hits to kill if you just give yourself Sacred Heart), and Triachnid.


If we forget about champion bosses, I think we'd be able to get rough estimates of all the monsters and bosses in the game in only a few more runs (especially if the Cheat Engine is used to give the player Forget Me Nows).

I'd say leave the sins for last, since it looks like the health of the sins might even change with every level.

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