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Achievements

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Achievements are rewarded to the player after completing challenges or reaching certain milestones in The Binding of Isaac. There are a total of 84 achievements in the game, 52 from the main game and a further 32 from the Wrath of the Lamb expansion.

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

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

Defeat Krampus in the Devil Room.

Achievements added in Wrath of the Lamb

Name Description Image How To Unlock
Samson Kill Mom but pass on 2 treasure room items. Samson Skip two Treasure Rooms and defeat Mom.
Blood Lust Kill Mom's Heart with Samson. Blood Lust Defeat Mom's Heart or It Lives in The Womb 2 with Samson.
Blood Rights Kill Satan with Samson Blood Rights Defeat Satan in Sheol with Samson.
The D20 Complete the final chapter with Isaac. The D20 Defeat Isaac in the Cathedral with Isaac.
The Celtic Cross Complete the final chapter with Maggy. The Cross Defeat Isaac in the Cathedral with Maggy.
Abel Complete the final chapter with Cain. Abel Defeat Isaac in the Cathedral with Cain.
The Curved Horn Complete the final chapter with Judas. The Curved Horn Defeat Isaac in the Cathedral with Judas.
The Sacrificial Knife Complete the final chapter with Eve. The Sacrificial Knife Defeat Isaac in the Cathedral with Eve.
The Rainbow Baby Complete the final chapter with ???. The Rainbow Baby Defeat Isaac in the Cathedral with ???.
The Bloody Penny Complete the final chapter with Samson. The Bloody Penny Defeat Isaac in the Cathedral with Samson.
The Candle Complete Challenge 1 The Candle Complete Challenge 1: Defeat Mom with Curse of Darkness on every floor.
The Lucky Toe Complete Challenge 2 The Lucky Toe Complete Challenge 2: Defeat Mom while starting out with -2 Luck.
The Burnt Penny Complete Challenge 3 The Burnt Penny Complete Challenge 3: Defeat Mom with Curse of the Labyrinth on every floor.
Guppys Tail Complete Challenge 4 Guppys Tail Complete Challenge 4: Defeat Mom, starting out with the Dead Cat item.
The Fish Head Complete Challenge 5 The Fish Head Complete Challenge 5: Defeat Mom's Heart or It Lives, starting out with The Mulligan and Infestation.
Mega Fetus Complete Challenge 6 MegaFetus 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 Super SMB Fan 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 The Spider Butt 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 The Counterfeit Coin Complete Challenge 9: Defeat Satan, starting out with the Holy Grail and The Halo.
Dad's Key  ??? Dads Key Defeat the final boss in The Chest.
Guppy's Hairball  ??? Guppys Hairball

Transform Isaac into a Cat. For details, see Guppy.

The Polaroid  ??? Polaroid achievement steam

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  ??? Daddys Love Complete challenge 10: Beat Isaac with no Start Item and no Item Rooms.
Platinum God! 100% the game. Platinum God 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  ??? Isaacs Head Complete The Chest with Isaac.
Maggys Faith  ??? Maggys Faith Complete The Chest with Magdalene.
Cains Eye  ??? Cains Eye

Complete The Chest with Cain.

(Bugged as of 1.48, unlocks when beating "The Chest" with Judas.)

Judas' Tongue  ??? Judas Tongue

Complete The Chest with Judas.

(Bugged as of 1.48, unlocks when beating "The Chest" with Eve.)

Eves Bird Foot  ??? Eves Bird Foot

Complete The Chest with Eve.


(Bugged as of 1.48, unlocks when beating "The Chest" with Samson.)

???s Soul  ??? BBs Soul

Complete The Chest with ???.


(Bugged as of 1.48, unlocks when beating "The Chest" with Cain.)

Samsons Lock  ??? Samsons Lock

Complete The Chest with Samson.


(Bugged as of 1.48, unlocks when beating "The Chest" with ???.)

The Left Hand  ??? The Left Hand Defeat Ultra Pride.

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".)

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