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LKH Unlock

Unlockables, as their name implies, are unlockable things. They can be various things, such as:

Unlockables can be gained through doing various tasks, such as destroying enough Poop, beating a chapter for the first time, or defeating a boss in a specific way.

Unlockables can be viewed by going to the "Stats" section in the main menu, and then viewing "Secrets" in the left-center of the screen.

Boss Unlockables[]

Name Type How to Unlock
A Radioactive Spider Collectible Defeat the Boss in Basement 2.
Spelunker Collectible Defeat the Boss in Caves 2.
The Womb Level Defeat the Boss in The Depths 2.
The Harbingers Boss
A Cube of Meat Collectible
A Halo Collectible Defeat the Boss in The Depths 2 or The Womb 2 by using the Bible.
Monstro's Tooth Activated Defeat all possible bosses in the Basement.
Lil Chubby Collectible Defeat all possible bosses in the Caves.
Loki's Horns Collectible Defeat all possible bosses in The Depths.
The Book of Revelations Activated Defeat any Harbinger/Horseman.
Little Steven Collectible Defeat Steven.
Little C.H.A.D. Collectible Defeat C.H.A.D or the Headless Horseman.
Little Gish Collectible Defeat Gish.

A Lump Of Coal

Collectible Defeat Krampus.

Ending Unlockables[]

Name Type How to Unlock
Judas Character Defeat the boss in The Womb 2 for the first time.
The Book Of Belial Activated
The Noose Collectible Defeat the boss in The Womb 2 for the second time.
The Nail Activated Defeat the boss in The Womb 2 for the third time.
A Quarter Pickup Defeat the boss in The Womb 2 for the fourth time.
A Fetus In A Jar Collectible Defeat the boss in The Womb 2 for the fifth time.
Everything is Terrible!!! Difficulty Increase Defeat the boss in The Womb 2 for the sixth time.
The Wafer Collectible Defeat the boss in The Womb 2 for the seventh time.
Money = Power Collectible Defeat the boss in The Womb 2 for the eighth time.
It Lives Boss

Defeat the boss in The Womb 2 for the ninth time.

??? Character Defeat the boss in The Womb 2 for the tenth time.
The Poop Activated
The Relic Collectible Defeat the boss in The Womb 2 with Magdalene.
Sack Of Pennies Collectible Defeat the boss in The Womb 2 with Cain.
Robo-Baby Collectible Defeat the boss in The Womb 2 with Judas.
D6 Activated Defeat the boss in The Womb 2 with ???.
Razor Blade Activated Defeat the boss in The Womb 2 with Eve.
Mom's Knife Collectible Defeat the boss in Sheol with Isaac.
Guardian Angel Collectible Defeat the boss in Sheol with Magdalene.
Bomb Bag Collectible Defeat the boss in Sheol with Cain.
Monster Manuel Activated Defeat the boss in Sheol with Judas.
Forget Me Now Activated Defeat the boss in Sheol with ???.
Demon Baby Collectible Defeat the boss in Sheol with Eve.

Tasks[]

Name Type How to Unlock
Magdalene Character Have 7 heart containers in a single playthrough. (Soul Hearts are not counted)
Yum Heart Activated
Cain Character Have 55 Coins at once in a single playthrough.
Lucky Foot Collectible
Eve Character Make two or more deals with the devil in one playthrough.
Dead Bird Collectible
Super Bandage Collectible Defeat four Harbingers/Horsemen in a single playthrough.
Small Rock Collectible Destroy 50 Rocks over multiple playthroughs.
The Bean Activated Destroy 50 Poops piles over multiple playthroughs.
Mr. Mega Activated Destroy 10 Tinted Rocks rocks over multiple playthroughs.
Mom's Bottle Of Pills Activated Use 20 Blood Donation Machines over multiple playthroughs.
The Book Of Sin Activated Defeat all of the Seven Deadly Sins over multiple playthroughs.
The Gamekid Activated Visit 10 Arcades over multiple playthroughs.
The Necronomicon Activated Use the XIII Death Tarot Card 4 times over multiple playthroughs.
The Parasite Collectible Collect two of the following items in a single playthrough: Bob's Rotten Head, Brother Bobby, Dead Cat, Max's Head, Tammy's Head or Dead Bird.
Shears Activated Die 100 times.
The Common Cold Collectible Collect two of either Roid Rage, The Virus, and Growth Hormones in one playthrough.
Mom's Contacts Collectible

Collect Mom's Eye and Mom's Heels/Mom's Lipstick/Mom's Pad/Mom's Bra. No other Mom items contribute to unlocking this item.

Something from the Future (Steven) Boss Defeat bosses in The Basement 42 times.
Something Cute (C.H.A.D.) Boss Finish The Caves 20 times.
Something Sticky (Gish) Boss Finish The Depths 30 times.
Basement Boy Achievement Clear the Basement without taking damage.
Spelunker Boy Achievement Clear the Cave without taking damage.
Dark Boy Achievement Clear The Depths without taking damage.
Mamas Boy Achievement Clear the Womb without taking damage.
Golden God Achievement Collect 131/132 original items, Wrath of the Lamb items do not count.

Unlockables and Secrets Added in Wrath of the Lamb[]

Ending Unlockables[]

Name Type How to Unlock
Samson Character Complete Depths 2 without taking 2 Treasure Room items. The rooms can still be entered, however.
D20 Activated Complete the Cathedral as Isaac.
Celtic Cross Collectible Complete the Cathedral as Maggy (In-game unlock calls it The Crucifix).
Abel Collectible Complete the Cathedral as Cain.
Curved Horn Trinket Complete the Cathedral as Judas.
Sacrificial Dagger Collectible Complete the Cathedral as Eve.
Rainbow Baby Collectible Complete the Cathedral as ???.
Bloody Lust Collectible Complete Womb 2 as Samson.
Blood Rights Activated Complete Sheol as Samson.
Bloody Penny Trinket Complete the Cathedral as Samson.
The Polaroid Trinket Complete the Cathedral six times.
Isaac's Head Trinket Complete the Chest as Isaac.
Maggy's Faith Trinket Complete the Chest as Maggy.
Cain's Eye Trinket Complete the Chest as Cain. (Bug: unlocks ???'s Steam Achievement)
Judas' Tongue Trinket Complete the Chest as Judas. (Bug: unlocks Cain's Steam Achievement)
Eve's Bird Foot Trinket Complete the Chest as ???. (Bug: should be Eve and unlocks Judas's Steam Achievements)
???'s Soul Trinket Complete the Chest as Eve. (Bug: should be ??? and unlocks Samson's Steam Achievement)
Samson's Lock Trinket Complete the Chest as Samson. (Bug: unlocks Eve's Steam Achievement).

Challenge Rewards[]

Name Type How to Unlock
The Candle Activated Complete Challenge 1.
Lucky Toe Trinket Complete Challenge 2.
Burnt Penny Trinket Complete Challenge 3.
Guppy's Tail Collectible Complete Challenge 4.
Fish Head Trinket Complete Challenge 5.
Epic Fetus Collectible Complete Challenge 6.
Super Fan Collectible Complete Challenge 7.
Spider Butt Activated Complete Challenge 8.
Counterfeit Penny Trinket Complete Challenge 9.
Daddy's Love Collectible Complete Challenge 10.

Tasks[]

Name Type How to Unlock
Guppy's Hairball Collectible Transform Isaac into a Cat.
Dad's Key Activated Defeat ???.
A Forgotten Horseman Boss Destroy 30 Tinted Rocks. (Bug: the boss can spawn without unlocking this secret.)
Something Icky! Boss Finish The Womb 16 times.
The Left Hand Trinket Defeat Ultra Pride.
Platinum God Achievement Collect 197/198 items in the game and unlock all the secrets.
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