Achievements

Achievements are rewarded to the player after completing challenges or reaching certain milestones in The Binding of Isaac. They are similar but not identical to Secrets. There are a total of 99 achievements in the game; 52 from the main game and a further 47 from the Wrath of the Lamb expansion (including the Eternal Edition).

Note that the game saves periodically over time, and also saves when you use the in-game command to exit. For your own sake, make sure to always use the in-game command to exit the game, as opposed to force-quitting, clicking the X, or so on. It may be advisable to exit after a winning run or other major unlock, even if you plan to continue playing, simply as a precaution.

Achievements on the Mac version will be counted, but will not unlock in Steam until the game is launched in Windows.

List of Achievements[]

Standard Game[]

Name	Description	How To Unlock
The Radioactive Spider	Complete the Basement	Complete The Basement 2.
Monstro's Tooth	Defeat all bosses in the Basement	Defeat all types of bosses in The Basement. (Duke of Flies, Monstro, Gemini, Larry Jr.)
The Spelunker	Complete the Caves	Defeat the Boss in The Caves 2.
Lil Chubby	Defeat all bosses in the Caves	Defeat all types of bosses in The Caves. (Fistula , Gurdy , Peep , Chub )
I Killed Mom!	Kill Mom...	Defeat the boss in The Depths 2.
Loki's Horns	Defeat all bosses in The Depths	Defeat all types of bosses in The Depths. (Monstro II, Loki, Mom)
Small Rock	I like to break things...	Destroy 50 rocks over multiple playthroughs.
The Bean	You don't wanna know where this bean has been...	Destroy 50 poop piles over multiple playthroughs.
Mom's Bottle Of Pills	Mom needs her pills! Donate blood	Use Blood Donation Machines 20 times over multiple playthroughs.
The Gamekid	I lost mine in the Arcade...	Enter different Arcades 10 times over multiple playthroughs.
The Common Cold	Dirty needles... eww	Collect two of these in one playthrough: Roid Rage, The Virus, and Growth Hormones.
Mr. Mega!	Kids shouldn't play with matches	Destroy 30 X Marks the Spot rocks over multiple playthroughs.
The Book of Sin	Destroy the 7 sins!	Defeat all of The Seven Deadly Sins over multiple playthroughs.
Mom's Contacts	Stay out of mom's things!	Collect Mom's Eye and any other Mom's item in a single playthrough.
The Parasite	Kids shouldn't play with dead things...	Collect two "dead items" (Bob's Rotten Head, Dead Cat, Max's Head, Tammy's Head) in the same playthrough.
The Necronomicon	Call Death upon all of them!	Use the XIII Death Tarot Card four times over multiple playthroughs.
The Halo	Give Mom a taste of her own medicine!	Defeat Mom or Mom's Heart with The Bible. (Using it will instantly kill her.)
The Bandage	Make a Super Meat Boy!	Kill 4 Horsemen of the Apocalypse in a single playthrough.
The Shears	I've lost my head one too many times...	Die 100 times.
Maggy's Wig	Collect 7+ container hearts in one play through	Have a minimum of seven heart containers in a single playthrough.
Cain's Eyepatch	Collect 55+ pennies in one play through	Have 55 or more pennies on hand at once.
Judas' Fez	Complete the full game	Defeat the boss in The Womb 2.
Eve's Dead Bird	Make 2 deals with the devil in one play through	Make two deals with the devil in a single playthrough.
???	Complete the full game 10 times	Defeat the Boss in The Womb 2 a tenth time.
My Head Hurts...	Defeat Steven.	Defeat the alternate Boss Steven.
I need a hug...	Defeat C.H.A.D..	Defeat the alternate Boss C.H.A.D..
I Have Sticker Fingers...	Defeat Gish.	Defeat the alternate Boss Gish.
The Noose	Complete the full game 2 times	Defeat the Boss in The Womb 2 a second time.
The Nail	Complete the full game 3 times	Defeat the Boss in The Womb 2 a third time.
The Quarter	Complete the full game 4 times	Defeat the Boss in The Womb 2 a fourth time.
The Fetus	Complete the full game 5 times	Defeat the Boss in The Womb 2 a fifth time.
Everything is Terrible!!!	Complete the full game 6 times	Defeat the Boss in The Womb 2 a sixth time.
The Wafer	Complete the full game 7 times	Defeat the Boss in The Womb 2 a seventh time.
Money = Power	Complete the full game 8 times	Defeat the Boss in The Womb 2 an eighth time.
It Lives!	Complete the full game 9 times	Defeat the Boss in The Womb 2 a ninth time.
The Cross	Complete the full game with Maggy.	Defeat the Boss in The Womb 2 with Maggy.
The Bag	Complete the full game with Cain.	Defeat the Boss in The Womb 2 with Cain.
The Robo-Baby	Complete the full game with Judas	Defeat the Boss in The Womb 2 with Judas.
The Razor Blade	Complete the womb with Eve	Defeat the boss in The Womb 2 with Eve.
The D6	Complete the full game with ???.	Defeat the Boss in The Womb 2 with ???.
Golden God	100% the game	Collect every item and secret in the game. This achievement can be gained by collecting all but one of the items if you have defeated Krampus and found A Lump of Coal.
Basement Boy	Complete the Basement without taking damage	Complete The Basement without taking damage.
Spelunker Boy	Complete the Caves without taking damage	Complete The Caves without taking damage.
Dark Boy	Complete the Depths without taking damage	Complete The Depths without taking damage.
Mama's Boy	Complete the Womb without taking damage	Complete The Womb without taking damage.
Moms Knife	Complete Sheol with Isaac	Defeat the boss in Sheol with Isaac.
The Guardian Angel	Complete Sheol with Maggy	Defeat the boss in Sheol with Magdalene.
The Bomb Bag	Complete Sheol with Cain	Defeat the boss in Sheol with Cain.
The Monster Manual	Complete Sheol with Judas	Defeat the boss in Sheol with Judas.
The Demon Baby	Complete Sheol with Eve	Defeat the boss in Sheol with Eve.
Forget Me Now	Complete Sheol with ???	Defeat the boss in Sheol with ??? (Blue Baby).
A Gift From Krampus	Find Krampus in Satans room for a gift!	Defeat Krampus in the Devil Room.

Wrath of the Lamb Expansion []

Name	Description	How To Unlock
Samson	Kill Mom but pass on 2 treasure room items.	Skip two Treasure Rooms and defeat Mom.
Blood Lust	Kill Mom's Heart with Samson.	Defeat Mom's Heart or It Lives in The Womb 2 with Samson.
Blood Rights	Kill Satan with Samson	Defeat Satan in Sheol with Samson.
The D20	Complete the final chapter with Isaac.	Defeat Isaac in the Cathedral with Isaac.
The Celtic Cross	Complete the final chapter with Maggy.	Defeat Isaac in the Cathedral with Maggy.
Abel	Complete the final chapter with Cain.	Defeat Isaac in the Cathedral with Cain.
The Curved Horn	Complete the final chapter with Judas.	Defeat Isaac in the Cathedral with Judas.
The Sacrificial Knife	Complete the final chapter with Eve.	Defeat Isaac in the Cathedral with Eve.
The Rainbow Baby	Complete the final chapter with ???.	Defeat Isaac in the Cathedral with ???.
The Bloody Penny	Complete the final chapter with Samson.	Defeat Isaac in the Cathedral with Samson.
The Candle	Complete Challenge 1	Complete Challenge 1: Defeat Mom with Curse of Darkness on every floor.
The Lucky Toe	Complete Challenge 2	Complete Challenge 2: Defeat Mom while starting out with -2 Luck.
The Burnt Penny	Complete Challenge 3	Complete Challenge 3: Defeat Mom with Curse of the Labyrinth on every floor.
Guppys Tail	Complete Challenge 4	Complete Challenge 4: Defeat Mom, starting out with the Dead Cat item.
The Fish Head	Complete Challenge 5	Complete Challenge 5: Defeat Mom's Heart or It Lives, starting out with The Mulligan and Infestation.
Mega Fetus	Complete Challenge 6	Complete Challenge 6: Defeat Mom's Heart or It Lives, starting out with Dr Fetus and the Doctor's Remote.
Super SMB Fan	Complete Challenge 7	Complete Challenge 7: Defeat Mom's Heart or It Lives, starting out with a stage 4 Cube Of Meat.
The Spider Butt	Complete Challenge 8	Complete Challenge 8: Defeat Mom's Heart or It Lives, starting out with Mutant Spider and Spider's Bite.
The Counterfeit Coin	Complete Challenge 9	Complete Challenge 9: Defeat Satan, starting out with the Holy Grail and The Halo.
Dad's Key	???	Defeat the final boss in The Chest.
Guppy's Hairball	???	Transform Isaac into a Cat. For details, see Guppy.
The Polaroid	???	Complete the Cathedral six times. You may use different characters to do so. Completing the Cathedral with the Polaroid will allow you to enter The Chest.
Daddys Love	???	Complete challenge 10: Beat Isaac with no Start Item and no Item Rooms.
Platinum God!	100% the game.	Get all items and all secrets, including the Wrath of the Lamb expansion exclusive content. (If you have Ghost Baby, you will need one less item.)
Isaacs Head	???	Complete The Chest with Isaac.
Maggys Faith	???	Complete The Chest with Magdalene.
Cains Eye	???	Complete The Chest with Cain. (Bugged as of 1.48, unlocks when beating "The Chest" with Judas.)
Judas' Tongue	???	Complete The Chest with Judas. (Bugged as of 1.48, unlocks when beating "The Chest" with Eve.)
Eves Bird Foot	???	Complete The Chest with Eve. (Bugged as of 1.48, unlocks when beating "The Chest" with Samson.)
???s Soul	???	Complete The Chest with ???. (Bugged as of 1.48, unlocks when beating "The Chest" with Cain.)
Samsons Lock	???	Complete The Chest with Samson. (Bugged as of 1.48, unlocks when beating "The Chest" with ???.)
The Left Hand	???	Defeat Ultra Pride.

Eternal Edition Expansion []

Name	Description	How To Unlock
Eternal Life	Gain 7 Health upgrades from Eternal Hearts	Gain 7 health upgrades from Eternal Hearts.
Eternal Mom	Beat Mom in Hardmode	Defeat Mom in Hard Mode.
Eternal Heart	Beat Moms Heart in Hardmode	Defeat Mom's Heart in Hard Mode.
Eternal Satan	Beat Satan in Hardmode	Defeat Satan in Hard Mode.
Eternal Cathedral	Beat the boss in the Cathedral in Hardmode	Defeat the boss in the Cathedral in Hard Mode.
Hard Game	Beat the Game in Hardmode!	Complete the game in Hard Mode.
Eternal Isaac	Beat the game as Isaac in Hardmode	Complete The Chest as Isaac in Hard Mode.
Eternal Maggy	Beat the game as Magdalen^(sic) in Hardmode	Complete The Chest as Magdalene in Hard Mode.
Eternal Cain	Beat the game as Cain in Hardmode	Complete The Chest as Cain in Hard Mode.
Eternal Judas	Beat the game as Judas in Hardmode	Complete The Chest as Judas in Hard Mode.
Eternal Eve	Beat the game as Eve in Hardmode	Complete The Chest as Eve in Hard Mode.
Eternal ???	Beat the game as ??? in Hardmode, and good luck!	Complete The Chest as ??? in Hard Mode.
Eternal Samson	Beat the game as Samson in Hardmode	Complete The Chest as Samson in Hard Mode.
Eternal Personalities	Beat the game as all characters in Hardmode.	Complete The Chest as all characters in Hard Mode.
Eternal God	100% the game and hardmode (get all the achievements)	Get all items, all secrets and all other achievements. (If you have Ghost Baby, you will need one less item.)

Bugs[]

The game will count a single playthrough as two "completions" if the player somehow accesses Sheol (e.g. through a Devil Room in Womb 2 or by use of "We Need to Go Deeper") and successfully defeats Satan prior to the 10th completion of the game. Doing so will unlock as many as three endings per playthrough, and if done on the 9th playthrough can even unlock ??? (and The Poop) without the player having ever defeated It Lives.
For some users, achievements may never unlock at all. This can be fixed by closing The Binding Of Isaac, going to your Binding Of Isaac local files, deleting "FlashAchievements.exe", going to your Steam library, right clicking on The Binding Of Isaac, clicking on "Properties", going to the Local Files tab, and verifying the integrity of the game cache. Once Steam re-downloads the FlashAchievements.exe file, all of the missing achievements will be unlocked once you start up TBOI. This has to be re-done for any future locked achievements.
Please note that several of the Wrath of the Lamb achievements are bugged and can be found even without having them unlocked:
- When you defeat the Headless Horseman, you may get the achievement for defeating C.H.A.D..
- The Sacrificial Knife may be unlocked if you use a Joker Card or the We Need to Go Deeper! item on a The Womb XL floor to go directly to Sheol and then beat Satan with Eve (as though you had beaten Isaac). (Needs confirmation if it works with other characters on a similar situation.)
- If you defeat a boss while you have no Heart Containers, it is treated as if you won as ???, even if you were someone else. This applies only to Secrets; achievements are still unlocked normally, excluding any other bugs. (For example, beating The Chest as Eve - a message appears indicating the "???'s Soul" Secret is unlocked, but the unlocked achievement is "Judas' Tongue").