Satan

**Satan** is the boss of Sheol, and the final boss of Ending 12.

The battle against Satan has three distinct phases.

* Satan shouts, and roughly two seconds after Satan's voice dies out, The Fallen spawns at the center, with two Kamikaze Leeches to either side.

### Phase 2

Once The Fallen is dead, the Devil Room statue at the top of the screen transforms into Satan's first form. He stays near the top of the room moving horizontally and performs the following attacks:

* Spits out 2 consecutive spreads of 5 and 4 projectiles towards Isaac. He chains this attack at least twice.
* If Isaac is to either side of him, he can:
	+ Shoot half-rings of 8 projectiles from both his hands towards the left and right sides of the room.
* If Isaac is below him, he can:
	+ Shoot two  lasers from his hands, that curve towards each other while leaving a gap in the middle.
	+ Charge up and fires a  beam from his mouth directly downwards.

If Satan is pushed too far away from the top center of the room, he will rapidly spring back to that position.

### Phase 3

After depleting his entire second phase health bar and reaching half of his total HP, he flies off-screen and has one attack:

* Stomps the ground with both of his feet at Isaac's previous positions, similar to Mom's stomp attack, but with less delay. The stomps come down one after another, and after two stomps, they persist for a moment before both are retracted.
* Up to two Kamikaze Leeches continuously spawn during this phase.
	+ They can be killed by Satan's stomp, but will also deal considerable damage to him.
	+ There appears to be a maximum amount of Kamikaze Leeches that can be spawned, as they stop appearing if the fight draws out for too long and the Kamikaze Leeches are not killed.

Satan's projectiles and contact damage deal a whole heart of damage.

Once Satan is defeated, remaining Kamikaze Leeches die alongside him.

## Gallery

* Satan in-game.
* Satan in his second form.
* Satan in his statue form.
* Satan as one of  Delirium's forms.

## Unlockable Achievements

* I RULE! -  Defeat ??? or The Lamb, defeat **Satan** as  Isaac, and unlock
 Defeat ??? or The Lamb, and defeat **Satan** as  Isaac
 Defeat Mega Satan and unlock .

* Judas - Defeat **Satan**.

* The Negative - Defeat **Satan** 5 times.

* Mom's Knife - Defeat **Satan** as  Isaac.

* Guardian Angel - Defeat **Satan** as  Magdalene.

* A Bag of Bombs - Defeat **Satan** as  Cain.

* Judas' Tongue - Defeat **Satan** as  Judas.

* Forget Me Now - Defeat **Satan** as  ???.

* The Razor - Defeat **Satan** as  Eve.

* Blood Rights - Defeat **Satan** as  Samson.

* Daemon's Tail - Defeat **Satan** as  Azazel.

* Broken Ankh - Defeat **Satan** as  Lazarus.

* Book of Secrets - Defeat **Satan** as  Eden.

* The Mind - Defeat **Satan** as  The Lost.

* Serpent's Kiss - Defeat **Satan** as  Lilith.

* Keeper holds Store Key - Defeat **Satan** as  Keeper.

* Locust of Pestilence - Defeat **Satan** as  Apollyon.

* Pointy Rib - Defeat **Satan** as  The Forgotten.

* Urn of Souls - Defeat **Satan** as  Bethany.

* Red Stew - Defeat **Satan** as  Jacob and Esau.

* Godhead - Earn all  5 /  9 (except Ultra Greed) /  10 /  12 Completion Marks on Hard mode as  The Lost.

* Mom's Lock - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Isaac.

* Holy Crown - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Magdalene.

* Gilded Key - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Cain.

* Your Soul - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Judas.

* Dingle Berry - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted ???.

* Strange Key - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Eve.

* Temporary Tattoo - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Samson.

* Wicked Crown - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Azazel.

* Torn Pocket - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Lazarus.

* Nuh Uh! - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Eden.

* Kid's Drawing - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Lost.

* The Twins - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Lilith.

* Keeper's Bargain - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Keeper.

* Cricket Leg - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Apollyon.

* Polished Bone - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Forgotten.

* Expansion Pack - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Bethany.

* RC Remote - Defeat Isaac, ???, **Satan**, and The Lamb as  Tainted Jacob.

## Notes

* Every time Satan is defeated, the current savefile's image changes until  is unlocked.
* Defeating Satan for the 1st time will unlock Champion versions of Bosses.
* Using the  or  on Satan will instantly kill Isaac.
* On the third wave,  and/or  will be extremely useful, as Kamikaze Leeches and stomping (which is considered as an explosion) will not hurt Isaac.
	+ Stomps are no longer considered explosions and cannot have their damage negated.
* Unlike in the original *Binding of Isaac*, Satan's feet don't cause damage on contact for the short time they rest on the ground after a stomp, providing a window of opportunity to deal significant damage with orbitals such as , or activate other contact effects like .

## Trivia

* Satan appeared in the Halloween Update for the original *The Binding of Isaac.*
* Satan's pose as a statue and during the VS Screen is a nod to the demon Baphomet, who is usually portrayed in a similar pose.
* Satan was a fallen angel at first but became something more grand and hugely more evil overtime, which could explain him starting in his inferior "The Fallen" version of the boss.
* The demonic speech Satan shouts at the start of his first phase reuses one of Mom's voice lines, shouting "Isaac!" in reverse with heavy distortion.
* The music that plays during this battle is titled *Hericide*. He​ricide is a combination of the latin word *herus* (or *erus*), meaning master or lord, and the suffix -*cide*, denoting the act of killing.
	+ This music also plays during the battle against Mega Satan.
	+ This music also plays during the nightmare wave of Greed Mode, for unlocking the floor's Devil Room or Angel Room.

## Bugs

The easiest way to do this is to use only familiars to do damage, or to use 6 bombs (without modifications) against Satan's second phase.

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