Boil
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Boil
In-game sprite
Floor(s):
The Caves
Catacombs
The Depths
Necropolis
Related Monsters):
-
Health:
???
Attacks:
- Spews blood at Isaac (similar too Monstro)
Effective item(s):
N/A
Gut
In-game sprite
Floor(s):
The Caves
Catacombs
The Depths
Necropolis
Related Monsters):
-
Health:
???
Attacks:
- Shoot an IPECAC-like projectile at Isaac
Effective item(s):
N/A
Sack
In-game sprite
Floor(s):
Cellar
The Caves
Catacombs
The Depths
Necropolis
Related Monsters):
Spider
Health:
???
Attacks:
- Spawns Spiders
Effective item(s):
N/A
Boils are spawned by Gurdy, the green alternate Chub, the pink alternate Widow and also found in rooms as enemies. They start off as a small red sphere and slowly grow to full size. When full size, they will spurt out blood that can harm you. They'll decrease in size when hit but will regenerate to their full size until fully destroyed.
Boils are nearly harmless on their own, as you can simply kill them from a distance and do not deal damage on contact. With other enemies, however, they are far more dangerous: If entering a room with a large crowd of enemies and several boils providing covering fire, taking out enough of the boils to give yourself breathing room should be a big priority. Since they do not harm you on touch, you can use the virus to kill them before they grow too big.
Contents |
Champion Varieties
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Double HP.
Gut
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New enemies added in the Wrath of the Lamb, they are slightly more dangerous than the regular boil and not as common, they are however found more often in Necropolis.
Guts have different projectiles, they shoot with explosive shots at close range (same projectiles as Sloth) and can cause 1 heart of damage.
They can easily be a nuisance if there are other enemies backing them. However, they are rather easy to manipulate into destroying rocks or finding secret rooms without using a bomb.
Sack
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The third variant also added in the Wrath of the Lamb, they are not as common found as the regular boils, but more often than the Guts, especially in the Cellar.
Sacks don't shoot projectiles, however in close proximity they can spawn small spiders. They will not spawn spiders unless at full health, meaning that shooting them will render them harmless until regenerated.
They are often found with small spiders in a room and can be an annoyance if they are not disposed quickly as they can spawn other small spiders on you.
Tips: If you have the Charm Of The Vampire item, you can use Sacks to spawn spiders which can be killed to heal yourself.
These enemies resemble webbed sacks (and thus look similar to the item Daddy Longlegs).
Champion Varieties
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Walking Variants
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The walking variants attack like their normal variants, however they can walk. They are most commonly found in Necropolis. These enemies do not regenerate HP like their counterparts and can immediately attack without having to swell to their maximum size, however damaging these variants do not reduce the swelling of them.









